I first found out about RWBY through fanfiction, so I decided to watch the show. And I love it! A world where every weapon is a gun and you get to go to school to learn how to kill monsters. And after reading a few fanfics and watching some episodes, I decided to do this, crossover! So please enjoy!

Disclaimer: I don't own Danny Phantom or RWBY. I am not that creative.

Prologue: Disaster

"Let me go, Plasmius!" Danny Phantom, a fifteen-year-old boy with white hair, neon green eyes and tanned skin exclaimed as he struggled from a vampire-looking Ghost with black, horn-like hair, red eyes and blue skin. Danny was wearing a black hazmat suit with white gloves, boots and a belt. He was also wearing a space helmet and jetpack and on his left wrist was a watch his mom gave him for good luck. The two were currently in a spaceship, just a few miles from Earth's atmosphere.

"So you'll what? Save the day?" Plasmius said with a sneer as he held Danny from behind. "If I can't rule the world, then you can't save it!"

Danny gritted his teeth as he struggled to get off. He looked through the window and saw a massive, glowing green asteroid getting closer to Earth.

It all started a week ago, with Plasmius causing all of it. It all began when Plasmius took the Infi-Map from Frostbite and stopped near Jupiter's moon, where he found a large amount of pure Ectoranium. Phantom managed to stop him, but their fight caused the Ectoranium to started flying towards Earth.

When the asteroid appeared, everyone around the planet started panicking due to the size of the asteroid and its course towards Earth. If it hit them, it would be disastrous, thus they called it the 'Disasteroid.'

When Plasmius saw the asteroid, he tried to threaten the Earth by making giving them a choice; make him their leader or let the asteroid destroy them. Phantom stopped him by revealing their secrets in front of the whole world, changing from Ghosts to human in live television.

Angered and with no place to go, Plasmius fled the planet while Danny and his family figured out a way to save their planet. Jack, his father, suggested building a giant drill with a bomb inside to destroy the Disasteroid.

It took them almost all week to finish their last hope, and when it was done, Danny volunteered to fire it. His parents and sister didn't want him to go, since it was dangerous, but he told them that he had the best chance to survive, due to his powers.

With hugs and kisses, Danny flew the Fenton Space Craft and flew towards the incoming Disasteroid. But just as he was about to fire, Plasmius ambushed his ship and attacked him.

Suddenly, the Disasteroid hit the moon. Danny watched with horror as the beautiful moon was torn in half as the giant asteroid flew towards the ship. Growling, Danny released a large amount of Ghost energy, sending the older halfa off him. Danny then fired at Plasmius, sending him to the wall, knocking him unconscious.

Danny then ran towards the controls and saw that the firing controls were broken. Cursing, Danny looked at the Disasteroid then before at the Earth.

The planet looked so beautiful, yet fragile. His friends, family and everyone else was counting on him to save them. He even promised them he would return.

Danny's eyes hardened as he phased through the ground and stopped near the missile. He opened the missile's control panel, activating the drill and timer. He then turned him and the missile intangible and flew out the ship.

Danny then flew towards the Disasteroid at full speed, using every ounce of strength and energy he had. The drill became bigger as it hit the asteroid, digging towards the center of the asteroid. The drill finally stopped at the center.

Danny was about to fly away when he heard a buzzing noise. He looked and saw the timer of the bomb broken. Danny tried to fix it, but his watch suddenly beeped. He was out of time. He cursed as he tried to think of a way to stop the asteroid. He then looked at the missile.

"…I'm sorry," he whispered as he tore open the control panel and saw the big red button near some wires.

"No!" a voice exclaimed as someone grabbed his neck. Danny slightly turned his head and saw that Plasmius was stopping him. "If I can't rule, no one can!"

Danny started choking as he reached for the red button. His vision started going blurry as Plasmius crushed his throat. Just as he was about to black out, he remembered his family and his friends. With one last grunt, Danny strained forward and managed to push the button.

There was a bright light, then nothing.

OMG! What happened! Did Danny survived that explosion? What happened to the planet Earth? Will Plasmius ever stop being bitter? Want to find what happens next? Then wait for the next chapter! See you later!