Nine people, landed from a yacht, they find themselves on a deserted island for a two-week vacation in the villa of the old Uberto. They are: host, Giulia his second wife, the children of the first marriage Michele and Vincenzo, with their wives and Carla Greta, the daughter Patricia and her husband Walter, the elderly Elizabeth, sister of Hubert. While the coexistence of the nine rekindled old hatreds and promotes adultery (Michele cheating on his wife with Julia, Greta with her ​​husband Walter), Carla disappears,