The students embark on finding nominees for "Principal for the Day," while a custodial strike leaves the school a mess. Meanwhile, Brooke fears she may be pregnant; and Sam, Carmen and Lily discover something personal about Harrison's mother.

A new vice-principal joins Kennedy High and his good looks draw the attention of the female students. Meanwhile, Brooke lies to Carmen about a tattoo she claims was inspired by Josh, so Carmen suspects that Brooke may want her old beau back; and Emory tells Harrison that a grade-school music teacher was once impressed with Harrison's music skills.

Bobbi Glass ruins the annual "skip day" ritual for the popular and alternative kids by faxing their photos to their favorite hangouts so they'll be caught cutting classes. The kids plot their revenge during an extended musical number. Meanwhile, Sam and Brooke agree to work together to make their parents' rehearsal dinner a success.

Bobbi Glass's uncle Tipton is coming to town, and she has to find a solution for her lies. All these years she has been telling him about her child, which she doesn't have. He is rich and she wants his money. So she bribes Nicole to pretend to be her daughter. Carmen runs away from home because she is having family problems. Her father left and she has bruises on her arm. She stays with Sam and Jane for a while, but then Jane talks her into calling her mom. She doesn't want Carmen to come back anymore, and Carmen is thinking about getting her own place. Trying to help Carm with money, Lily shows up at the family lunch and poses as Bobbi's second daughter. Bobbi's plans are ruined and nobody gets the money. Meanwhile, Bonnie, the new SAT teacher, becomes friendly with Brooke and they have lunch together. She gets drunk and Brooke tries to drive her home, but she takes the wrong car by accident and gets in major trouble. Jane and Sam have to take her out of prison. And then Jane realizes