When Elena attends an underground warehouse party with her friends, she finds herself caught in a nightmarish trap where the revelers are mowed, sliced and crushed to death by a macabre series of contraptions operated by a masked psychopath. When the grisly massacre is over, Elena is the only survivor but before she can escape, she is transported to an unknown location. Fortunately for Elena, one man--Arkin --knows exactly where she's headed. Elena's wealthy father hires a crack team of mercenaries to force Arkin to lead them to the killer's lair. But even these hardened warriors are not prepared for what they encounter: an abandoned hotel-turned-torture-chamber, rigged with deadly traps and filled with mangled corpses.