The first season of American animated television series Regular Show originally aired on Cartoon Network in the United States. Many of the characters are loosely based on those developed for Quintel's student films at California Institute of the Arts: The Naive Man From Lolliland and 2 in the AM PM. Quintel pitched Regular Show for Cartoon Network's Cartoonstitute project, in which the network allowed young artists to create pilots with no notes to possibly be optioned as a show. After being green-lit, Quintel recruited several indie comic book artists to compose the staff of the show, as their style matched close to what he desired for the series. Regular Show was picked up by Cartoon Network, who decided to create a twelve-episode first season.
The first episode of Regular Show's first season is "The Power", ending with the season finale "Mordecai and the Rigbys". The season was storyboarded and written by J. G. Quintel, Sean Szeles, Shion Takeuchi, Mike Roth, Jake Armstrong, Benton Connor, Kat Morris, Paul Scarlata and Kent Osborne, while being produced by Cartoon Network Studios. The show is rated TV-PG and occasionally TV-PG-V. Despite not airing on Cartoon Network's Adult Swim line-up, it is considered more of a traditional adult's animated comedy than a children's cartoon.
Mordecai and Rigby must find a way to cover up a hole in the wall they created, and a magical keyboard they name 'The Power' might be just the thing for it.
A birthday party is scheduled in the park, and everyone has interesting jobs to do. That is, everybody but Mordecai and Rigby, who are only trusted with the lame job of setting up the chairs. In order to prove they are not slackers, the duo agree to set them up without being distracted.
Mordecai and Rigby need money in order to see their favourite childhood band. They decide to take on extra shifts, but soon start to tire out so they turn to coffee in order to stay awake.
Rigby suffers a final humiliation as he loses a fight to Mordecai over a video game. He turns to 'Death Kwon Do' in order to finally win one over his friend.
When Rigby digs up a good-looking plate from the garbage, he and Mordecai decide to use it by eating a piece of chocolate cake on it. As their efforts prove fruitless, they decide the only way forward is to convince the solitary Skips to have a birthday party.
The annual park barbecue has arrived, and Benson is so excited he has ordered premium hot dogs. When things go wrong, Mordecai blames Rigby for always making things worse, despite his claims that he can 'totally fix it.'
Mordecai and Rigby need to buy a grilled cheese sandwich for Benson, but can't be bothered to wait in line. Instead, they pretend to be astronauts, which results in them trying to out lie each other.
In an effort to woo Margaret, Mordecai starts using a cologne that can supposedly attract women, called "Dude Time". Unfortunately, all it seems to attract are unicorns.
Mordecai and Rigby's constant prank calls result in one of their victims sending them back in time to the eighties.
When the park is going to be audited, the guys must find a way to sort their taxes out or face it being closed down. Mordecai suggests Rigby's accountant brother, Don, but Rigby must first get over a long running feud.
After gorging on snacks at the snack bar, Rigby suffers an unfortunate accident as his consciousness separates from his body.
After ordering a bunch of shirts for a fake band, Mordecai and Rigby find themselves having to learn to play for real to avoid looking like idiots at the local open mic night.