Five young women vacation together at a resort on an isolated island. They are the resorts only customers and, aside from the boat Captain who brought them there and the resorts handyman, Wylie, the islands only inhabitants. When one of the women is found dead, the others begin to fear the Captain, whos been acting strangely. Wylie and the Captain argue over the identity of the murderer, each accusing the other, and a fight erupts. Alarmed, the women attempt to leave the island, but the boat, their only means of escape, explodes and sinks before they can board it. Then Wylie comes to their aid, claiming to have killed the boat Captain in self-defense and telling the women theyre safe. But are they?