An isolated villa, a family just like the others. Michele has remarried beautiful Damiana, and lives with her and her daughter Fiore, a seductive teen with whom he has an intricate relationship. In the middle of the night, Sergio, an ex-con, bursts in the villa and abducts the family. his mission: retrieve and bring back to Caligola, the man who hired him, some important documents, now seeminlgy buried somewhere in the greenhouse near the house.
Five people travelling by camper crash into a tree. When they recover, the road they were driving on has been replaced by an impenetrable forest and a wooden house.