A group of lowlifes are terrorized in their own convenience store by a masked killer during their nightly poker game. The killer's modus operandi is to break into stores after hours, murder the workers, and take the surveillance tapes. Trapped and forced to survive until dawn, the remaining survivors realize that they may have been playing a twisted game of cat and mouse with the killer all along, with gruesome and creative methods of dispatching them mirroring their own dark fantasies.