In search of a new energy source, Russia accidentally reawakens the Kolossus - a giant robot doomsday device from the Cold War. At the same time, a new Mega Shark appears, threatening global security.

When three young women receive shocking videos anonymously, a nightmare is reawakened that ignites a thirst for bloody vengeance. They embark on a journey to locate the house, their sadistic captor and to discover the truth behind those locked doors. But, the most shocking revelation of this chilling tale is the identities of the victims.