Louis makes Ren late for school on the Friday when she's supposed to set up her display for Lawrence Junior High's 75th anniversary. She assures Principal Wexler she'll have it done in time for Monday. While Wexler is going out of town, Coach Tugnut, about number 6 in line, is put in charge of the school. In gym class a girl Ren hardly knows named Chloe spends too much time talking to her and Coach gives both of them detention! Ren feals uneasy in the strange world of detention, run by a sleeping teacher and full of the school's misfits. The king of detention turns out to be none other than her brother Louis, who runs a gambling operation featuring racing hamsters. Tugnut shows up. Everything is hidden from him but he questions Ren. She doesn't rat out Louis, which gains her some respect in his eyes.

Ren needs to work on her display before Monday but doesn't know how she could possibly do that. Louis offers to help her by breaking into the school after hours. When they arrive there Ren