Olivia, Bertucci, and Codman are a trio—an impenetrable triangle of friendship. Beyond friendship, they share a love of the Circle Cinema, a once-thriving movie theater now facing the wrecking ball, about to be forgotten forever—which is, as far as Olivia and Codman can tell, what's going to happen to them after graduation.

Bertucci convinces Olivia and Codman to spend their last night before graduation locked inside the cinema's concrete walls. None of them can open the box before sunrise. The trio is then forced to face their secrets, the events of the past year, and whatever is to come when the new day dawns.