JJ is taking his best friend Lucy to the senior prom, but on the way there a near car crash suddenly points him in the direction of a possible new romance, and when he finally gets to the prom he finds that Lucy has been taken to the hospital and never wants to see him again; but when he wakes up the next morning he finds that it is prom day again--and what seemed like a second chance quickly turns into an endless loop of disasters with no obvious way to break the cycle and fix his relationship.