Just Set Up the Chairs

Synopsis
While preparing for a birthday party, Mordecai and Rigby are assigned to set up chairs, and the two try to get the job done to prove to Benson they are not slackers. But instead, they slack off as usual. In the process, they accidentally unleash an 8-bit demon from an old arcade game of the same name (Destroyer of Worlds) who tries to destroy the world. Meanwhile, Muscle Man and High-Five Ghost are assigned to pick up the Special Entertaiment, but soon find out the difficult way to do it when they find out the entertaiment is a talking horse and a drunken clown.

Summary
When a birthday party is planned for a young child, everyone has tasks to complete. Muscle Man and High-Five Ghost are administrators of picking up the entertainment crew, Skips inflates the bounce castle, and Benson goes to pick up the children on a bus. However, Mordecai and Rigby are in charge of setting up the chairs for the party, as Benson cannot trust them with something more important. For the duo to prove that they are not slackers, they both agree to be productive by setting up the chairs without ruining anything.

Mordecai does the job, however Rigby, expectedly, does nothing but play games with Mordecai. Mordecai convinces Rigby to get the job done in order to get more interesting jobs, which he eventually gives in.When they realize they have an insufficient amount of chairs left, they try to find a storage room with the missing chairs. Mordecai comes across a locked room, and to both of their surprise, comes across an old-school arcade, playing them rather then do their designated jobs.

When they find one of the games requires service, they find a note attached that says "In the name of all that is holy, don't connect the red wire to the blue wire. Thank you." Rigby ignores the note and unleashes a demon known as the Destroyer of Worlds, who begins creating destruction in the park, even killing the special entertainment and attacking the children. With Skip's assistance, the duo form a giant 8-bit robot designed to fight the Destroyer of Worlds, which each of them controlling one body part. Skips is knocked out, and Mordecai goes off to set up the rest of the chairs, leaving Rigby to control the robot all by himself. In order to save Mordecai, Rigby excessive button-mashing is powerful enough to destroy the Destroyer of Worlds and save the day.

Mordecai then congratulates Rigby on a job well done, replying "That was some sweet button mashing." Rigby proved that he has skills, but the moment quickly ends as an angry-red Benson comes out and confronts the two, but it is shown that Mordecai and Rigby have succeeded in setting up the chairs. Benson angrily tells them that's the last time that he assigned them to something important such as the chairs. They are thrilled that they don't have to set up the chairs next time, but they are given a new assignment, and that's sweeping up the remains of the special entertainment. The two agree to get to it, albeit after they have their break of course.