During World War II, an American agent, his butler and a pilot are searching for a missing admiral when their plane crash lands on a Caribbean island. Taken in by a German doctor and his strange wife, the trio discovers the island inhabited by zombies under the control of Dr. Sangre. The doctor is attempting to use the zombies to extract information from the missing admiral to help his country's war efforts. Through the efforts of the butler, the heroes are able to turn the tables on Dr. Sangre and set his zombies against him.