A couple travels to Northern Europe to visit a rural hometown's fabled Swedish mid-summer festival. What begins as an idyllic retreat quickly devolves into an increasingly violent and bizarre competition at the hands of a pagan cult.

A man wakes up in the wilderness, in a pit full of dead bodies, with no memory and must determine if the murderer is one of the strangers who rescued him, or if he himself is the killer.

A man wakes up in a pit of dead bodies with no memory of who he is or how he got there. Fleeing the scene, he breaks into a nearby house and is met at gunpoint by a group of terrified strangers, all suffering from memory loss. Suspicion gives way to violence as the group starts to piece together clues about their identities, but when they uncover a threat that's more vicious - and hungry - than each other, they are forced to figure out what brought them all together - before it's too late.