Mordecai, a blue jay, and Rigby, a raccoon, are groundskeepers at a park. But these best friends are lazy and don't let their jobs interfere with their ability to have fun. While Mordecai tries to be responsible and do a good job, he's frequently led astray by his immature pal, who is totally without fear or shame, and has no boundaries at all. The friends often end up having to pay for their irresponsible actions as they usually get into more trouble than they anticipated. Their slacking off at work causes much chagrin for their hot-tempered gumball machine boss, Benson.
Mordecai and Rigby watch an old British horror movie, Ello Gov'nor, featuring an evil ghost taxi.
Mordecai and Rigby get in a fight over Margaret, and Mordecai sends them traveling through time by destroying all the clocks.
Everyone at the park receives appreciation plaques except Mordecai and Rigby, so Mordecai and Rigby decide to write false stories.
Benson gets surveillance cameras to keep track of Mordecai and Rigby on the job.
Mordecai and Rigby help Pops get over his fear of public speaking.
Mordecai and Rigby are forced to work under Muscle Man and must endure his infuriating and repetitive jokes.
Mordecai and Rigby need to find a new TV in order to defeat the hardest video game ever.
Mordecai and Rigby try to get good at an arcade game at the coffee shop to earn some respect.
Mordecai and Rigby look for help when their awesome house party turns lame.
Mordecai sees Pops naked and goes on a quest to unsee what he has seen!
Benson gets demoted and has to work with Mordecai and Rigby.
Mordecai and Rigby try to return a mediocre role-playing board game The Realm of Darthon to a grumpy store manager.
Rigby gets a terrible, terrible song stuck in his head and will go to any lengths to get it out.
Muscle Man breaks up with his girlfriend Starla leaving him an emotional mess and unable to work. Mordecai and Rigby try to get them back together.
Rigby hires a temp to do his work but gets jealous when the temp becomes tight with Mordecai.
Mordecai jinxes Rigby punching him every time he speaks. So Rigby must figure out how to un-jinx himself without talking in the presence of Mordecai.
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.
Mordecai and Rigby start to ask each other favors by saying "do me a solid".
Our heroes organize a scary fund-raiser.
After Pops gets injured from wrestling with Mordecai and Rigby (who think wrestling is fake), he has to rest with them by his side.
Skips accidentally kills Rigby and has to arm wrestle Death to get him back.
Mordecai and Rigby go to unbelievable lengths to beat Muscle Man and High Five Ghost in a radio contest to win a car.
Mordecai and Rigby find four ducklings while cleaning the park fountain and, after imprinting on Rigby, attempt to pawn them off on other people.
Rigby gets sick of Mordecai making fun of him for not having a high school diploma, so he takes a special formula that will make him smarter.
Mordecai and Rigby play rock-paper-scissors over a chair and tie 100 times summoning a tie-breaking monster!
Mordecai and Rigby join with Muscle Man and High Five Ghost to make their own funny internet videos and they compete to get the most views.
Mordecai and Rigby play Roadkill Bingo, where in order to get a Bingo, one has to pick up the dead roadkill animals on the bingo card.
Mordecai and Rigby need to get an embarrassing tape from the Karaoke bar before their friends see it.