Two best friends, a blue jay named Mordecai and a brown raccoon named Rigby, work as groundskeepers at a park and spend their days trying to entertain themselves by perfecting useless skill during work hours or any means neccesary, much to the chagrin of Benson, a high-tempered gumball machine, Skips, a yeti, but to the delight of Pops, a naïve English gentleman with a lollipop-shaped head. Muscle Man, an overweight and green man, and High-Five Ghost, a ghost with a hand extending from the top of his head, are both neutral about Rigby and Mordecai's shenanigans, but they both get on Mordecai and Rigby's nerves with the "MY MOM!" jokes. The episodes usually revolve around the two's personal life such as obtaining concert tickets, getting cake, or making up for a mess they have caused, often leading to highly surreal and unusual events. Rigby pressures Mordecai into doing bad stuff and slacking by working his way around the hard, cold truth.