Worst birthday ever. The hunt goes bad. The innocent dies. Dean gets hauled away and framed for murder. Sam gets injured. Cas arrives too late to help.

Good thing they're in a time loop and have a chance to get it right... eventually.

Bonus points: This time, Sam's the one who doesn't realize the time loop's happening and keeps getting pissed off when so much goes wrong on his birthday (little does he know how bad it's gone before).

Oh! Extra bonus points: Sam gets injured a different way every time loop!