Two college students, Danny (Clayton Snyder) and Sarah (Alix Kermes), are strangers until they wake up together after a wild night of partying. Both are nursing broken hearts after their respective partners cheated on them, and the last thing on their minds was casually hooking up for meaningless sex. But they can’t recall how they happen to be in the same bed. Bit by bit they piece together the previous evening’s debaucherous activities, as well as their friends’ Machiavellian schemes to get them new partners. And when the full picture is revealed no one will be more surprised than Danny and Sarah with 'What Happened Last Night'!