It's four years later, and a new group of students has been placed in Saturday detention at the infamous and prestigious Crestview Academy. When Siouxsie, sophomore 'undercrust,' crashes the party to avenge her sister's death, a Saturday detention reserved for the privileged seniors of Crestview Academy turns into a date in hell. It's not long before a naïve pussycat lover, gay drug dealer, smokin' hot preacher's daughter, squeaky-clean senator's son, and the uninvited younger outsider find themselves locked-up in school with no way out, wondering who (or what) has set them up. Hilarity and suspense ensue while each 'bad kid' pits one against the other, and one by one each falls victim to absurdly gruesome 'accidents' while trying to escape.
After making their way through high school (twice), big changes are in store for officers Schmidt and Jenko when they go deep undercover at a local college. But when Jenko meets a kindred spirit on the football team, and Schmidt infiltrates the bohemian art major scene, they begin to question their partnership. Now they don't have to just crack the case - they have to figure out if they can have a mature relationship. If these two overgrown adolescents can grow from freshmen into real men, college might be the best thing that ever happened to them.
