A young woman in Paris goes to a party in the enormous labyrinth of limestone tunnels beneath Paris. When she becomes separated from her friends, she is convinced something is chasing her through the dark tunnels.
When the heiress of a luxury hotel chain is kidnapped at her dingy motel outside Detroit by a band of ruthless sex traffickers, her downtrodden assistant must figure out a way to rescue her.
A student creates and sells a drug called 'Z' which has the unexpected side effect of resurrecting the dead as flesh-eating zombies, who proceed to wreak havoc at a Halloween rave.