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.

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.

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.

Mordecai and Rigby need to find a new TV in order to defeat the hardest video game ever.

Mordecai and Rigby find out that everyone has been invited by Muscle Man to High Five Ghost’s birthday party except them. They decide to go anyway.

The morning after being hired at the park, Mordecai and Rigby both look to obtain Pop's old couch.

Rigby gets sprayed by a skunk and has to get rid of the smell.

A three-part Halloween special in which terrifying tales are told. In "Creepy Doll", the guys discover an old doll that wants revenge on Pops. In "Death Metal Crash Pit", a pit is haunted by a 1980s death-metal band. In the last segment, "In the House", Mordecai dresses up as a father with five "kids", to receive more Halloween candy, while Rigby goes as a robber and scares away people.

Mordecai tries to eat a large omelette in order to win a hat for Rigby.

The guys fight for their jobs after Benson replaces them with an ostrich and a possum.

Mordecai and Rigby relive the first episode, but soon realize that they need to help Pops. Pops realizes that he must reach out to Anti-Pops and finally saves the universe at the cost of his life. The entire park crew return home to their friends and family where they are seen growing up and moving on to better lives. 25 years later, the entire crew return and Mordecai and Rigby reflect on Pops' sacrifice. Regular Show ends with Pops watching the series on VHS and uttering one final "Jolly Good Show".