It's Halloween... ...and Lewi Welker is keeping a dark secret on his backwoods property. Buried in the swamp is a toolbox, and locked inside of it is the Spirit of Jazazel. An evil demon. A being that wants nothing more than to bathe in spilled blood. A being that's just dying to be free. It's Halloween... ...and Lewi Welker's son is hosting a party in the woods... in a cabin... by the swamp... near the demon. All of his friends are there, and none of them know just how terrifying their night is about to become. It's Halloween... ...and everyone is about to die!