Episode 1
After nearly recovering from a broken heart, Mordecai embarks on a road trip to Margaret's college to return her sweater, taking Rigby along, who wishes for Mordecai to move on, but a hallucination of Margaret gets the better of him.
Episode 2
Mordecai and Rigby try street-performing to earn extra money quickly for a video game, but soon compete with another street performer who uses their act to his advantage.
Episode 3
Mordecai and Rigby have to fix Benson’s car before he finds out they broke its window.
Episode 4
Mordecai, Rigby, Muscle Man, and Hi-Five Ghost strive to get Every Meat Burritos, a new special type of burrito, from the Jimbros' Burritos Drive-Thru.
Episode 5
Rigby buys a device that unfairly divides his share of the room to avoid cleaning his mess in it.
Episode 6
After a time-traveling tornado sends an 18th-century Skips to the present, Mordecai and Rigby have to help present Skips return his teenage self to his time or else he will die.
Episode 7
Mordecai and Rigby are charged with bringing Benson tortillas.
Episode 8
The group makes a bet over who can tell the scariest story at their Halloween party.
Episode 9
Each of the park guys want to win a bet by telling the scariest story at a Halloween party.
Episode 10
Pops gives Mordecai and Rigby tants – pants that double as tables – which Mordecai and Rigby pretend to like. However, the duo accidentally ruins the pants and try to fix them not to hurt Pops' feelings.
Episode 11
Rigby has to beat a challenger at a bank shooting arcade game.
Episode 12
Muscle Man wants to win a bodybuilding competition at his gym.
Episode 13
Mordecai and Rigby accidentally ruin Thanksgiving and have to fix it before their families arrive for dinner.
Episode 14
Episode 15
Mordecai, Rigby, Muscle Man, and Hi-Five Ghost try to get stuntman licenses so they can perform for Timmy's stuntman-themed birthday party.
Episode 16
Rigby tries to stop Mordecai from kissing a girl named Tracy on New Year's Eve.
Episode 17
The group wants to win a dodgeball tournament, but Mordecai becomes distracted when he discovers that C.J. is on one of the opposing teams.
Episode 18
Mordecai and Rigby get stuck in a portable toilet at the park after Mordecai takes a dare from C.J.
Episode 19
Hi-Five Ghost hopes to reunite with a lady from his past after receiving a long-awaited postcard from her.
Episode 20
With his high school reunion arriving, Rigby tries to accomplish skydiving while eating a burrito, a task he claimed he would do before attending the reunion.
Episode 21
Mordecai, Rigby, Muscle Man, and Hi-Five Ghost have to venture into the bottom of the crash pit to find their video camera before their boss Benson notices it's gone.
Episode 22
Mordecai and Rigby play a prank on Daylight Saving Time by setting all of the clocks in the park at the wrong time, which leads to disastrous results.
Episode 23
When their boss Benson accidentally breaks Mr. Maellard's autographed guitar, Mordecai and Rigby have to help him replace it.
Episode 24
Skips tells Mordecai and Rigby the story of how he became immortal.
Episode 25
Episode 26
Mordecai and Rigby revive their band with the rest of the group and compete in a battle of the bands to win an air conditioner during a massive heatwave.
Episode 27
After an important portrait of their boss Benson is ruined, Mordecai and Rigby attempt to repaint it before it is awarded to him.
Episode 28
Mordecai, Rigby, and C.J. help Eileen make a music video for her college filmmaking class.
Episode 29
Mordecai ponders over his feelings towards C.J. after he sends an auto-corrected text message to her saying that he likes her.
Episode 30
Mordecai has a date with C.J., but he unfortunately also has to babysit Death's 300-year-old son, Thomas.
Episode 31
Rigby is humiliated on the game show Expert or Liar and sets off to redeem himself by locating the show's host and making another appearance.
Episode 32
Pops strives to learn how to surf in order to reconnect with nature after havin a bad day with it.
Episode 33
Benson's chance of winning a gold watch at the park is jeopardized when he eats too many buffalo wings.
Episode 34
Mordecai and Rigby have to repaint the park house after throwing pizza pouches at it and ruining its paint job while cleaning it.
Episode 35
Mordecai and Rigby have to bake a cake for Mr. Maellard's surprise birthday party after the original cake is ruined.
Episode 36
Skips tries to find his soul mate on a dating show after seeing how happy everyone else is in a relationship.
Episode 37
Thomas tries to prove his worth by retrieving the park founder's statue.
Episode 38
The guys help Skips throw a bachelor party for his cousin Quips.
Episode 39
Mordecai and Rigby accidentally destroy C.J.'s brand new tent and need help fixing it before she finds out.
Episode 40
Mordecai and C.J. want to go on a romantic date.
