 Five young women vacation together at a resort on an isolated island. They are the resort s only customers and, aside from the boat captain who brought them here and the resort s handyman, Wylie, the island s only inhabitants. When one of the women is found dead, the others begin to fear the captain, who s 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 they re safe. But are they?