Check out this fun twist on the classic teen house party movie. +1 starts off as your basic, one-night-only kids-being-kids bender movie. But then the whole worlds flips, and a couple of kids get stuck in a time loop with physical copies of themselves. Or maybe they're the copies?

Either way, Dennis Iliadis' movie appears to have a darker take on time loop theory. We especially love spying the two girl copies making out with each other. Here's the official synopsis:

Three college friends hit the biggest party of the year, where a mysterious phenomenon disrupts the night, quickly descending into a chaos that challenges their friendships — and whether they can stay alive.

+1 hits theaters on September 20th.