Spence and Bru must once again stop their arch-enemy Hammerhead who has gained control over a top secret naval device.

A man and a voodoo drug dealer are interrupted and the man runs to a boat which explodes shortly after. His wife, who is an old flame of Spence, comes and asks Spence to finish him. Bru is wounded by a poisoned arrow and hallucinates. They all have to take care of with voodoo before it is over.