A biohazard quarantine is placed on Louis' bedroom after he forgets about a plate of sushi. Donnie soon regrets inviting him to share his room. On school-photo day Ren has a terrible reaction to medication, and her campaign for retakes goes nowhere until Louis gets involved.
Ren is a huge fan of newscaster Cynthia Mills while Louis and Twitty like weatherman Zippy Winds. To win a contest to meet their idols, the boys try to rig it but it involves Beans. Naturally, everything goes wrong. Can it be set right?
Eileen tries to present a model family as she runs for a new office, but the crazy antics of Louis end up in the local news. He tries to help his mother out by winning the science fair, but his invention creates a disaster.
Louis befriends new student Lenny, whose size protects him during the start of dodgeball in gym class. Ren decides the game is barbaric and tries to get it banned until a stunt by Louis changes her mind.
Louis and Ren are out of control with their bickering so Donnie gets them on a TV show that will solve the problem. But Louis unexpectedly does a great kindness for Ren. Donnie wants to impress a French girl and needs Nelson to interpret which backfires.
Principal Wexler gives Ren a job with many responsibilities but the power goes to her head. The Stevens parents suggest Louis be given a position to combat his antics and he's made hall monitor. After installing surveillance cameras, Louis and Tom catch Ren breaking quite a number of rules.
Donnie is going to be inducted into the Wombat Hall of Fame and Louis pranks him because he's jealous. Injured Donnie is up for a scholarship and needs to seem healthy so Louis enlists Twitty in an elaborate scheme. Ren tangles with Beans over his stunts.
Ren organizes a charity mother-daughter bowling event but is embarrassed that her mother is bad at it. Louis hires a butler, Chives, to attend to his needs but he eventually feels guilty for his appalling behavior.