Rainy summer evening… Young people are driving to the new trendy Phobos club which is under construction. They call the club “a bunker”, since it is a former bomb shelter which is reconstructed to become a club. At first, the party omens nothing wrong, but the bunker doors turn out to be blocked, and all of them get locked underground without light and communication facilities. At first, all of them are kidding and do not realize how dangerous the situation is. Then they get frightened. The guys will need to cope with their fear before the bunker let them free.