Desperate to repay his debt to his ex-wife, an ex-con plots a heist at his new employer's country home, unaware that a second criminal has also targeted the property, and rigged it with a series of deadly traps.
The monsters have made it into a small neighboring town in the middle of nowhere and the locals have to band with the survivors of the bar' slaughter to figure out how to survive.
The survivors are saved by the mysterious prophet Short Bus Gus, who seemingly has the ability to control the beasts. He leads them into the sewers as they travel to the big city. Along the way they get help from karate expert Jean-Claude Seagal and learn that the beasts originate from a place called The Hive. Armed with this knowledge, they decide to fight back and destroy the beasts.