Sampson and his son Ainsley are hunting alligators in a swamp. While Ainsley is urinating, Sampson falls silent; Ainsley finds Sampson dead before he too is killed by a monstrous being.uring a Mardi Gras celebration in New Orleans, a group of friends including Ben and his best friend Marcus decide to go on a haunted swamp tour. They find the tour closed because the guide, Rev. Zombie, was sued for negligence. Rev. Zombie suggests they try a place farther down the street, owned by the over-the-top, inexperienced tour guide Shawn. Marcus decides to leave but changes his mind upon seeing two topless girls: Misty, a ditzy porn star, and Jenna, a bossy, boastful, up-and-coming actress. Their sleazy director, Doug Shapiro, is also present. Ben pays for himself and Marcus and Shawn leads them to his tour bus, where the other tourists, Jim and Shannon Permatteo, a Minnesota married couple, and the quiet, hot-tempered Marybeth are waiting.
