Prom is supposed to be the night you remember your whole life. But for seventeen-year-old Zach, it's about to become his whole life - after a kiss from a masked stranger, Zach finds himself stuck in a time loop, endlessly repeating the same day.
Zach thinks that the only way to break the cycle is to work out the identity of his mystery admirer. But when everyone around him is wearing masks of one kind or another, how can he ever find out who his true love might be?