Okay time once again for a brand new crossover, this time is a Danny Phantom and Star vs the forces of Evil. This is my first time writing Star vs the forces of Evil, so I may not get them right like the show. This story is actually a completely rewrite of Star vs the forces of Evil with Danny Phantom in it. First, I like said this, to all you Marco, Sam, and Tuckers fans out there, I'm sorry but they will not be show in the rewrite of the first season. But maybe they will show up in the other rewrites of the other three seasons. I will use some episodes from both shows with some changes added to them. This is the rewrite of the first episode Star comes to Earth. I'm aware that each episode is spilt into a 11 minutes for each, so I'm using some of the episodes I seen or like. Okay let's see if I can get this started!

"Far, far away, in a magical land called Mewni, lived a princess – Star Butterfly."

We see a castle in a brand new land that doesn't look like earth, in truth it not. This is the land of Mewni. We move inside the castle to see a portrait of Star Butterfly, King Butterfly, and Queen Butterfly.

"Rail slide!"

We then see Star Butterfly sliding down a rail but end up crashing and breaks a floating crystal decoration. The portrait falls on top of her. She rips through it as she stands up, and the chandelier tilts. Star winches at that know she was in trouble if her parents found out.

"Some people have called me reckless and irresponsible just because..."

Then we see Star in a cave fighting what appear to be...

"...I fight monsters...and tame wild unicorns."

We then move to forest to see a unicorn drinking from a creek before Star jump on it and it started to buck wildly.

"Yee-haw!" Star shouted as she rode through her hometown market scaring some of the people and guards.

"I like to have fun! And I'm about to have a whole lot more because today is my 14th birthday! And according to tradition, my mom the queen has to bestow upon me our greatest family heirloom: the royal magic wand!"

Star parents, know as Queen Moon and King River, stood in the throne room waiting for Star. Everyone then hear the sound of the horse and turn to the gates. Before the guards could open them, Star bust in with the wild unicorn and rode up to her parents Moon and River duck as the unicorn jump over them and through the wall as Star jump off and land in front of her parents panting excitedly.

"Now, Star, this wand is a big responsibility. If it falls into the hands of evil forces, the universe could be destroyed." Moon told her, stopping her from grabbing the wand a few times.

Star got her hands on it and the wand change to match Star. She gasp happily before turning to her parents.

"Don't worry, Mom. I can handle it." She said.

Just a few minutes laters, Star look distressed as she try to bright some of the people day by making a rainbow but it somehow caught on fire and burn the town below. Star slowly shuffles away knowing she was in big trouble. Her parents was watch her and was a bit surprise of what happen.

"She can't handle it." They said.

"Nooooo! I can be good. Please! Don't send me to St. Olga's Reform School for Wayward Princesses!" Star cried as a carriage was being pack with her stuff.

Star scream as she thought of that school that changes the way princesses act. Moon and River look at each other before they turn back to Star who was still screaming.

"Sweetheart, we're not sending you there." River said.

"Oh!" Star said as she stop screaming.

"Yet." Moon added.

"We're sending you to train in a safer dimension; a place called Earth." River added.

"Earth?" Star asked confuse.

Moon push Star in carriage as she whine about leaving her home.

"Manfred, open the portal." River said to the man in the front of the carriage.

Manfred took out a pair of scissors and star to cut open the air before a portal was show. Once open the carriage move through as Star look at her home.

"Goodbye Mewni." She said, not notices a monster was watching her leaving.

Amity Park, the nicest place to leave or as some people say. It was also the home to one Danny Fenton. The school had just recover from a giant meat monster attack that was started by two protesters, Sam Mansion and Tucker Foley. The School principal had call their parents and Sam and Tucker were forced to move. leaving Danny alone. But Danny wasn't no normal kid just a few months ago he got into a accident that gave him ghost powers. After using them to stop the giant meat monster, which was really a ghost that was upset about the the school menu that was change. But then things change when Star Butterfly appear on Earth.

"So you say you're from another dimension?" The Principal asked.

The lights flicker on and off and everyone turns to see Star messing with the light switch.

"And you said there was no magic on Earth." Star giggle.

"Yeah... this isn't gonna work." The Principal said.

However, Moon and River were prepared for this and River show the principal a chest full of gold. Once the principal saw it, he was singing a different tune.

"She is gonna love it here!" He said.

Star kept messing with the light switch making Moon a little worry.

"She going to need a guilde." River spoke with the same worry.

Danny sat in his class look at the two empty seats that once houses his best friends Sam and Tucker. Mr. Lancer look at Danny and can tell he miss them. Before he could say anything the speaker turn on.

"Daniel Fenton, to the principal's office. Daniel Fenton, to the principal's office."

Danny was a bit shock to hear that since he hasn't done anything. Too bad Dash had other plans.

"Well, well, well, looks like Fen-toenail is in trouble. What did you do? Get in trouble of being a loser?" Dash asked before laughing.

"That enough Mr. Baxter or I'll send you to the principal office." Mr Lancer said.

Danny walk towards the Principal Office wondering what he did. He soon saw the principal and a girl he never saw before looking over a water fountain.

"Daniel, I want you to meet our new foreign exchange student – Star Butterfly." The principal said as Star got the water fountain to work.

"What?" Danny asked confuse.

"I need a responsible, never-take-chances type to keep an eye on her, and who better than you?" The Principal said suripsing Danny.

"Wait what?" Danny asked.

The Principal just took his chest of gold and walk away saying something about ice cream. Danny look at girl and couldn't help to notice how weird she was.

Danny led Star through the school showing the classrooms and explaining classes they teach. All the while Star was saying hi to just about everyone they met.

"I not sure why I have to do this. I'm mean your a foreign exchange student you're not going stay here too long." Danny complain.

"Oh don't worry. I'm sure we'll going to be great friends." Star said placing her arm around Danny.

"I already have friends." Danny said taking her arm off her.

"Really?!" Star gasp as she cup her cheeks, "where are they? Can I meet them?"

"They...move." Danny said sadly shocking Star.

"Oh, Sorry." Star said knowing how he feels.

After all she just move to earth, leaving her friend behind. Then she got an idea.

"How about I be your new best friend? We can do many things together." She said.

"Who are you?" Danny asked wondering about this crazy girl.

"I'm a magical princess from another dimension!" Star answers making a rainbow with her wand, and several cute creatures appear around her. The rainbow suddenly bursts into flames, and the cute creatures run away.

Danny was a bit shock at the answer, but something tells him she was telling the truth. Danny turn to the clock and could see that the school was coming to a end.

"Well, that brings us to the end of our tour. It was nice meeting you Star, but I have head home." Danny said.

"Bye, new friend! See you tomorrow! Bye! Bye, new friend! See you later!" Star said watching Danny leave.

Once Danny was gone from he sight, her smile drop as she felt bad for Danny. Losing his best friends was really sad. She was going to make it up with him by being his friend no matter what.

Danny walk home think about the new girl. She was weird, but look like she didn't know much about earth. Which backup her claim from being from another dimension. He also notices how sad Star became when he told her that his friends move. Star seem like a nice person, a little weird for sure, but nice otherwise. He reach his home and was shock to her his parents laughing. He open the door and was shock to see his parents talking with the new girl he met at school.

Oh, Danny! Come meet the new foreign exchange student who's gonna be living with us!" Maddie said.

"Wha...? W-wha...?" Danny asked shock.

"What?! I had no idea these were your parents! I just assumed everyone on Earth had the last name "Fenton"!" Star said just as shock but happy otherwise.

"Won't it be nice to have Star's upbeat, lively energy around the house?" Maddie asked.

"We could've gotten that from a litter of puppies." Jazz groan as she can not believe that her parents took in a foreign exchange student with no questions asked.

Star gasp and said, " I... love... puppies!"

Star then use her wand to make a litter of 8 cute puppies, that Jack and Maddie aww about, while Jazz raise an eyebrow of what Star just did. Then the puppies started shooting lasers out of their eyes to everyone shock. Star look a bit upset seeing that one of her idea was not working.

"Well, they are really cute." Jack said pick up the puppies to pet it as it shot a laser in his eye.

"Ow, my eye." Jack shouted before laughing.

"Danny, why don't you show Star her room?" Maddie said making Star happy.

Star skip upstairs as Danny pull her luggage with the puppies following them. What no one notices is that the same monster that was watching Star leaving Mewni was watching her one again. He laugh and pull out a pair of scissors and cut the thin air to open a portal. He jump through and soon appear in a new area. He salutes and croaks.

"Ludo, master, I've tracked down Star Butterfly. They've hidden her in the Earth dimension. Unguarded." He said.

A evil laugh was heard as yellow eyes was shown. The chair turn around and there sat a very small monster using pillows to make himself taller. This was Ludo and he was a total joke, but let's hear him out first.

"Excellent work, Buff Frog. I knew they couldn't hide that royal brat from me for long. Soon, the wand will be mine. And then the universe. And then...! Actually, the universe should do it." Ludo said.

"I'm coming for you, Princess Butterfly...!"

Yeah, let turn back to Star and Danny shall we?

Star look around her room as Danny pull Star luggage into the room with the puppies shooting their lasers at his legs, but Danny didn't pay any mind to it.

"Here's your new room...!" Danny said dropping the luggage on his foot.

"Ouch!" Danny said freeing his foot and rug it.

"Okay... I can work with this." Star said before she gasp.

"Sparkle Glitter Bomb Expand!"

Before Danny knew it the whole room was change. What he didn't know at the time was now Fenton Works has a tower sticking out of it.

"Whoa." Danny said speechless as Star jump on her new bed.

"Ahhh! That's better!" She said.

"Got to say Star this is awesome! Make me wish my room was like this." Danny said looking around.

"You do?!" Star gasp as she got off her bed thinking maybe this will help her become Danny friend faster.

"Star wait." Danny try to say before Star pull him to his room.

"Mystic Room Suck Transform!"

Instead of changing Danny room, Star made a black hole and started to suck everything in. Both of them scream and Danny use a bit of his power to make sure he and Star didn't get suck in. Lucky Star was able to shut door and the two caught their breath.

"Suck"?! "Suck"?! Why was the word "suck" in that spell?!" Danny asked.

"I don't know! It just came out that way!" Star said upset this plan was a failure too.

Danny groan and slide down to the floor as Star look worry.

"I'm sorry, Danny. Uh... how about a little sunshine to brighten your day?" Star said making a sun appear above his head only for it to turn into a rain cloud.

Danny groan even louder before getting up and started to walk out of his house.

"Danny? Where are you going?" Star asked.

"Out." Danny said.

"Can I come?" Star asked.

"No! I need some time alone! Okay?" Danny said trying not to get angry with Star.

"Are you sure?" Star asked worry.

"Yes, just wait here. I be back later!" Danny said before slamming the front door.

Star walk up to the door and started to reach for the handle but kept pull her hand away trying to think of how she was going to make it up to Danny.

Danny sat at a bench in the park as he try to calm down. He understand that Star was just trying to help, but she just trying to hard. Danny wanted to give Star a change, he really does, it just he wasn't sure if he was the best choice. He always had Tucker and Sam with him to take care of his problems but they weren't here not.

"I'm not sure if I can do this without you guys." Danny mumble to himself.

He then look up to see Star in front of him looking sad. It did shock him and he also wonder why she was here.

"Star? What are you doing here?" He asked.

Star remove the rain cloud and look at the ground.

"I didn't get a choice about coming here to Earth, and you didn't get a choice about having to deal with me. I wanted to be your friend after your other friends move. I know I can't replace them. I just don't like to see you alone and sad." Star explain.

Danny listen to Star and could understand why she was doing this. He was just about to speak when Star spoke again.

"I'll... I'll find another family to live with." She said.

Danny try to speak his mind but become shock when he saw something behind Star.

"S-S-Star?" Danny said pointing behind her.

Star turn around and saw Ludo and his monsters on earth which shock her.

"Star Butterfly! At last, I've found you!" Ludo said.

"Ludo! How did you know I was here?" Star asked him.

"Wouldn't you like to know?" Ludo chuckle.

"Yes. That's why I asked." Star told him.

"Well, Buff Frog—hey! I don't have to tell you anything! Get her!" Ludo started to explain but caught himself and made his order.

Star got ready to attack before feeling some very strange and dangerous. She wasn't the only one. Ludo and his monsters felt it too. Danny walk in front of Star, his bangs covering his eyes.

"So you guys are willy to attack a girl? Not on my watch." Danny said lifting his head to show his blue eyes was now green.

"And just who do you think you are?" Ludo wonder.

"My name is Danny and I'm GOING GHOST!" Danny shouted as a white ring appear and started to split.

Star, Ludo, and Ludo monsters watch in shock and awe as Danny clothes turn into a black and white jumpsuit. His raven black hair turn white as his eyes remind green. Star look shock at Danny transformation and then notice her wand glowing a bit. Ludo was shock to see a human transform into something he only heard about. A spirit. He snap out it.

"I said get Star Butterfly!" He shouted.

Danny quickly punch a three eye monster minion in the gut before knocking him off his feet with a uppercut. Star just should there shock before smiling with glee.

"Wow Danny! I didn't know you where a spirit." She said.

"I'm ghost Star, there a difference but right now we need to deal with these monsters." Danny said.

Star stood by his side before the two went on the attack. Danny quickly knock a Bearicorn away, as Star fights a Beard Deer who is wielding a hammer; she kicks him in the stomach, and the hammer bonks him on the head knocking him out for a few seconds. Danny quickly flew across the screen to attack another monster as Ludo watch in shock.

"You said she was unguarded!" He shouted at Buff Frog who shrug.

Another monsters was send flying as the Beard Deer monster was hit with a blast of water. Danny turn to punch another monster but saw it had two heads. It growl at him but Danny quickly use his fist to punch both heads continuously. Star was fighting a giraffe-headed minion and was able to use it neck to get behind it.

"Rainbow Fist Punch!"

A rainbow fist appear out of the wand and knock the minion into nearby park car. Danny had the three eye minion trying to attack him and saw the what Star did. He led the minion over to the car before opening the other door make the giraffe minion neck stretch out and hit the minion. Star knocks a minion over with her wand, and it whinnies in pain like a horse. Danny appear next to her and the two share a smile as Danny punch the two head minion. Star use her wand to knock Buff Frog, who just join the fight, into a streetlight, just missing Ludo.

"You're embarrassing me! Get up!" Ludo shouted.

Buff Frog was able to get back to his feet and break the streetlight off it base and change back at Star.

"Jellybean Hallucination Mist!"

Buff Frog was shock to see Jelly Beans floating around him and his face appear on his heads.

"Whoa... what is happening?" He asked.

Danny and Star stood ready to fight some more before they were knock over by two minions. But Danny was able to knock them back as he and Star stood up.

"Mega... Narwhal Blast!"

With that last spell the monsters were defeated. Ludo looks surprised at first, but then became displeased.

"You want some of this, Ludo?"

Ludo turn around to see Star standing behind him with a smirk.

"No." He said taken out a pair of scissors.

"You see, you morons?! This is what happens when you don't work out!" Ludo shouted as he open a portal.

"Your muscles are like pudding! Come on, back in the portal, back in the portal." He told them.

Each and every monster was badly hurt as they walk through the portal.

"You even retreat like losers!" Ludo added.

"I'm freaking out...!" Buff Frog said still under the spell.

Ludo enter the portal last before turning to Star and Danny.

"I'll get you, Star Butterf—!" Ludo started to said before the portal close around his neck.

Lucky Ludo was able to pull his head through leaving his skull hat behind. Seeing that the danger has passed Danny turn back into his human form before turning to Star who was trying not to become excited.

"Listen Star, can't you not tell anyone?" Danny asked her.

"Huh? Why?" Star asked.

"I got those powers by accident and I not really sure what these powers can do or if they will get stronger. But most of all you can't tell my parents!" Danny said confusing Star even more.

"Mom and Dad are ghost hunters and they believe all ghost are evil and I don't want to them to know." Dany explain.

Star could see this as something else she could leave Danny alone with. Plus she had no plan on telling Danny's secret.

"Well... I should probably go pack my bags." Star said and started to walk away sadly.

Danny notices the look and sigh. He quickly ran up and stop her.

"Wait! I don't want you to go. I want you to stay with us." Danny told her.

"Really? Hugs!" Star cheer and hug him.

Danny was a little shock but smiles and hug her back.

"And Star, I'll be happy to have you as my friend." Danny said.

Star cheer with glee as she jump up and down. Danny smile before asking Star something.

"Are there gonna be monsters attacking us all the time?"

"Yeah, probably." Star answers.

"Well, let's show them not to mess with us. We are team!" Danny said.

"Butterfly Promise?" Star asked.

"Butterfly Promise?" Danny repeated.

"Yeah it something my family made. It goes like this, Butterfly, Butterfly flap your wings. No matter the secrets that they bring." Star said making her hand flap like a butterfly and move them.

Danny smiles and said, "Sure Butterfly Promise."