The night before graduation, all of Hancock High celebrates at their school's annual senior lock-in. But what starts out as a fun night turns horribly wrong when a body is found and it is revealed that the victim is none other than Troy Richards, the school's star lacrosse player. Everyone is acting totally clueless. There's Jennifer (the dream girl), Naomi (the geek), Sassi (the overachiever), and Tatum (the rebel). At a glance, it seems like they couldn't be more unalike except for the fact that they all hated Troy (the lax bro)... but who wanted him dead?

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