F.Y.I. I don't know when Mordecai and Rigby started working for the park so I'm just gonna say it was three years after they got expelled from high school.

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Regular Show: A Different Direction in Time

Prologue

Four words: saddest friendship breakup ever! No debate there if you asked Benson, Skip, Muscle Man High Five Ghost, or Pops about what they thought after just seeing Mordecai end his friendship with Rigby. Not only this but for the reason being that Rigby had apparently ruined Mordecai's chances of going to College U all because he couldn't get in. It was so shocking, so dramatic, so something you'd only expect to see in a soap opera, yet it happened.

Now the park crew stood watching as Rigby took off in Skip's van, leaving them all behind in shock. Though their attention immediately became directed towards the sound of a familiar voice.

"Boy was that fun to watch," said none other than the Evil/Future Mr. Ross who stood at the top of the entrance to West Anderson High, (camera in hand).

"WHAT THE HELL ARE YOU DOING HERE?!" Benson shouted.

"HAVEN'T YOU DONE ENOUGH HARM ALREADY?!" Pops also shouted

"Besides," Skips added in, "aren't you supposed to be destroying time?"

"Yeah time loser," Muscle Man snarked which High Fives supported, "Yeah!"

"Eh, no matter at this point I'm going to win anyway. So I thought, why not watch what was probably the worst moment in Rigby's life. You know, the selfish idiot who ruined, not just my life, but his own best friends', as well as pretty much everybody else's since he 'technically caused the Timenado when he lied about Mordecai's acceptance into College U," Mr. Ross defended.

"Shut time loser," Muscle Man snapped back.

"He's right you know," Mordecai said as he walked out of the school with his dead/future-self leaning on his shoulder.

"Rigby is selfish. And stupid. And the cause of all this. If it wasn't for him I'd had gotten into College U, gotten a good job, and none of us probably wouldn't be here today cleaning up a mess he made; nor would we have to have to clean up all the other messes he's made in the last three years. Yet here we are trying to defeat the apocalypse led by a mad teacher and my future, now evil, self. And you know what? I'm done with this, and I'm done with Rigby. So I say we fix things the way we should've done when we first got here."

"What do you mean by that?" Pop asked.

"Simple, we go back in time to when I'm getting home from school, but make sure I get home early enough to catch Rigby forging my rejection letter. Then we take the keys to the science lab from Rigby so that he can't gain access to it. At the same time, we'll also warn Past Mr. Ross so that he can take extra precaution into keeping Rigby from getting anywhere near the time machine and using it to create the Timenado. That way I can go to college, Rigby gets punished for his deeds, and we stop the Timenado, thus saving everyone. What do you think?"

Everyone thought about Mordecai's plan for a minute before they each gave their opinion, with Muscle Man being the first to speak up.

"Hmmm, that sounds like a good plan bro. I'm in."

"Ditto," High Five Ghost said with the plan.

"You had me at Rigby gets punished. It's about time he gets his just deserts. Plus without Mordecai's references, he won't be able to get a job at the park, meaning that we'll never have to deal with his shenanigans."

"Are you sure we should do this? I mean if we do, then we'll never meet Mordecai or Rigby. Plus we'll be depriving Rigby of his best friend," Pops pointed out.

"Pops, Rigby ruined his own friendship with Mordecai when he robbed him of his chance to go to his dream school and live a happy life. And it wasn't till a mad scientist came around and threaten to kill one of us before he revealed the truth," Benson pointed out. "Besides if it wasn't for Rigby's lies time itself wouldn't be at risk of internal doom. Plus think about all the times Rigby's slacked off and gotten someone hurt. And every time we give him another chance he just wastes it. He's done more harm than good to the park. You know this, I know this, and everybody knows this. It's time Rigby learned that he can't just do whatever he wants without paying for it. So what do you say?"

Pops thought about it for a moment. On one hand, Rigby was Pops' friend; but on the other hand, Benson was right, and what Rigby had done was horrible. Besides Mordecai deserved the chance to go live out his dreams. Reluctantly Pops responded in agreement, "Alright let's do this. Skips?"

"Probably our best chance to fix everything. Though it can be assumed that Rigby's taken the time machine and flown away. Meaning that we can't go back in time. So where are we gonna get another time machine?"

"Simple," Mordecai said, pointing a thumb at Mr. Ross, shocking everyone.

"WHAT!?" Screamed Benson.

"Seriously dude? Muscle Man asked, not believing what was being suggested.

"No way. That guy's crazy." Fives said.

"C'mon guys. It's like Skips said, Rigby's probably taken our time machine who knows where," Mordecai reminded everyone.

"Ten bucks says he went to go weep somewhere," Mr. Ross said.

"I'll take that action," Muscle Man said.

"Any who," Mordecai continued, "He's only evil because Rigby and I messed with his time machine. If we hadn't he probably would've finished it, but without creating the Timenado, become a famous scientist, won a bunch of fancy awards, and not turned evil. But if he works with us then not only could we make his life better, but we could allow him to get his revenge on Rigby in a much easier way. Not to mention, he may be able to get his past self, (who was a teacher at this time), to help us."

"He's right you know," Mr. Ross stated. "Along with my time machine, my past-self had the authorization to commandeer school buses. We can use him to commandeer the school bus that Mordecai's past-self will be taking home and get him there in time to catch Rigby in the act."

"Wait, hold on a second," Benson said trying to understand what he was now hearing. "Are you saying you're actually in?"

"Yep."

"Why should we trust you?" Skips asked.

"Number one: as Mordecai said, if Rigby hadn't interfered I would've become rich, famous, and not wound up in prison. Number two: I hate Rigby, not Mordecai. Number three: ruin Rigby's life two times in one day, that sort of opportunity comes only once in ten lifetimes. Number four: either we go along with this plan, or I destroy you all. What's it gonna be?"

Reluctantly Skips, along with everyone else realized that there wasn't probably any better options. After nodding at each other to signify their decision, Benson responded. "Okay, we're in. but Mr. Ross, as soon as we know that the Timenado won't happen you have to take us back to our own time."

"Sure. Though given how much of the timeline we're changing, it's likely that once our mission is accomplished, we'll immediately return to our own time with no memory of any of this, or of the, soon to be, former timeline."

"Wait, what?" Benson asked.

Instead of answering, Mr. Ross activated his time machine, sending them all a couple of hours back in time to when school was getting out right in the middle of the teachers' lounge. Due to classes just ending, the only staff member present was none other than Past Mr. Ross (since he'd dismissed his gym class early so that he could have some time to contemplate his revenge on Rigby), who was utterly flabbergasted at the sight before him.

Though before he could say a single word, Mordecai grabbed him by the shoulders and pulled closer so that they were at eye level with each other.

"Mr. Ross it's me, Mordecai. I'm from the future," Mordecai said to a now even more shocked teacher. "Look there isn't much time but Rigby's about to do something that'll lead to both our lives to ruins and perhaps the entire universe. We need you to use your authority to commandeer school buses to get my past-self home in time to stop Rigby."

After Mordecai let him go, Past Mr. Ross, (completely confused), looked towards his future-self, giving him a questioning look.

"Hey this may be our best chance to get revenge on Rigby for ruining our volleyball championship, as well as avoid prison," Mr. Ross said in response.

Luckily this was more than enough to convince Past Mr. Ross. "Okay I'm in," he said to everyone.

The gang then made their way towards Mordecai's bus just in time.

"Out of the driver's seat bus driver," Past Mr. Ross ordered as he, his future self, Mordecai, and the rest of the park staff entered the bus. "We're commandeering this bus NOW!"

"Yeah bus bro," Muscle Man said.

Too confused by the sight of Mr. Ross's compatriots, the bus driver did as he was told; taking a seat in the front row beside Pops and Benson as the bus sped off towards Mordecai's house.

"Ugh, why are there two guys that look like old versions of Mordecai and Mr. Ross on the bus?" A random student asked.

"Yeah, and who are the other guys with them," Past Mordecai also asked.

"I think I saw some members of the volleyball team beat two of them up," said another student.

"Yeah I remember those guys," said another random student. "I think they're from Riverdale."

"WE'RE NOT FROM RIVERDALE! WE'RE FROM THE FUTURE! AND WE'RE HERE TO STOP RIGBY FROM KEEPING MORDECAI HERE FROM HIS DREAM SCHOOL, AS WELL AS PREVENTING THE BIGGEST DISASTER IN THE HISTORY OF TIME ITSELF FROM HAPPENING!" Benson shouted.

This required further explanation, especially for Past Mordecai "Wait, what?"

"It's true younger Mordecai," Muscle Man said, "Rigby doesn't get into College U, so he's going to forge a fake letter from the school saying that you don't get in before you get home today. This'll result in you two blowing up the science lab, getting expelled from high school, you going to community college, (which you end up dropping out of), getting stuck in a dead-end job, and eventually becoming second in command of an evil organization set on destroying time itself."

"Also, Mr. Ross gets arrested and becomes a mad scientist because of all this, so he and his past-self are here to save themselves," Pops added in.

"As well as get revenge on Rigby," mentioned High Fives.

Yeah, despite hearing this, Past Mordecai couldn't believe it. Rigby was his best friend, they'd known each other since they were toddlers. He'd worked so hard to help his raccoon buddy get out of so many tuff situations at the risk of jeopardizing himself in multiple ways. It just didn't make sense that Rigby would do something so horrible to him after all they'd been through?

He couldn't believe, he just couldn't. But then again, why would his future self, as well as Mr. Ross, Mr. Ross' future self, and a bunch of others strangers, (who he definitely knew didn't go his school), be on his bus, trying to get him home before Rigby achieved such a horrible task?

As he looked around the bus, he saw that everyone was looking at him, all shocked except for the group who "commandeered" the bus who instead wore looks of sadness.

"No, it can't be. It can't be," Past Mordecai said in denial.

"It's true," Mordecai said to his past self. "Rigby's been lying to us all this time. I didn't find out about it till a few minutes ago when Future Mr. Ross revealed the truth to us. It was then that I realized that Rigby's an idiot who's destined for a miserable life and will only take us down with him if we continue to be affiliated with him."

It was still hard, (but now less so), for Past Mordecai to accept. Deep down, he'd known how Rigby wasn't always the best person, including as a friend. And if his future self would go to all this trouble, then how he could he not believe him?

By this time the bus had reached Mordecai's house just in time for everyone to witness Rigby in the act. Somehow not hearing the sound of the bus behind him, Rigby focused on typing what Past Mordecai assumed was the fake rejection letter that he'd been told about.

"Oh man. I think Rigby really is doing what those future guys said he was doing," said one of the students in disbelief.

Though a part of Past Mordecai still wasn't convinced. Standing up, he walks out of the bus and marched straight towards Rigby, calling out to him, "Yo Rigby!"

Startled, Past Rigby turned around to see his best friend coming right up to him; but before he could try to hide the fake letter, Mordecai, "the younger one", reached over behind him, snatched the paper from the typewriter, and read it.

After reading what had been written so far, all denial of what Rigby was claimed to have been doing had completely vanished from Past Mordecai's mind. Instead, he was filled with one strong emotion, rage.

"Rigby YOU JERK!"

In the end, the mission was a success. Mordecai ended his friendship with Rigby, went to College U, and got a great, non-evil job. Principle Dean used Rigby's latest stunt as an excuse to expel him, as well as permanently ban him from the school which prevented him from gaining access to Mr. Ross's science lab or his time machine. As a result, the Timenado was never created, nor did Mr. Ross get arrested. In fact, during that following summer, Mr. Ross successfully finished his time machine, got a full pardon from smuggling plutonium because of his breakthrough in the science community, won many noble prizes, and became a highly successful/wealthy scientist; he also managed to go back in time and win the volleyball state championship.

On top of all this, Mr. Ross' theory about everyone not remembering the time ordeal, as well the "now former timeline" proved accurate once Mordecai's past-self ended his friendship with Rigby. The moment after it happened everyone from the future ended going back to their own time with no memories of their time adventure; nor of the things that had happened had Mordecai and Rigby remained friends.

Now Mordecai and Rigby are each living their separate lives, one being better than the other; with no contact with each other what so ever. At least till six years after the incident that is.

To be continued…

Well, that's the prequel. I hope you all like it and look forward to the first chapter.