Three stranger are trap inside an lift in an empty flat edifice during a blackout. The wheezing Claudia is traumatize with the accident with her darling grandma due to a minute of distraction. Karl is a widow doc that love his girl. Tommy is a immature man that has merely by chance kill the violent male parent of his girlfriend Francesca while protect her and is plan to runaway to City of Light with her. The tenseness of grouping escalate to a incubus when one of the stranger show that is a sociopath and sadistic serial-killer.