The Stratford sisters, feisty Kat and social climber Bianca, endure their first day at a new high school.

Bianca is determined to get on Chastity's good side and organises a charity event in aid of the cheerleading squad; Kat is pestered by an unwanted admirer.

Bianca needs help getting to a house party her father has forbidden her to attend; Kat needs a fake ID after Patrick invites her to a concert.

Bianca starts a rumour that she is dating an older guy in order to shed her good-girl image; Kat's view of Patrick changes after they're both sent to detention.

Kat enrols in a class fixing cars to convert her gas guzzler into a biodiesel vehicle; Bianca partners with Joey in chemistry class in an attempt to raise his grade.

Kat complains to the school administration about a teacher's grading system; Bianca starts a reality web show to earn money for a shopping trip.