After a messy breakup, Heidi swears off dating and vows to get revenge on everyone that's crossed her. But when she finds herself stuck on detention with goodie-two-shoes Saffron, Heidi's forced to risk getting hurt again, or cut herself off from her friends forever. This is the sequel to Flunk: The Sleepover, and the next chapter in the Heidi/Tabby saga.

Saffron's forced to deal with the worst hangover ever, whilst Brayden attempts to reinvent himself for Celeste's benefit. Dani takes Ingrid to a gay club with unintended consequences.