This film starts out like the Love Boat on acid, as a cast of unpleasant characters, all with horrible secrets, take a chartered cargo ship to escape their troubles. Unfortunately, the leaky ship is carrying an explosive that can be set off by sea water and it sinks, stranding many characters in a Sargasso Sea populated by man-eating seaweed, giant monster crabs and turtles, and some Spanish conquistadors who think the Inquisition is still on.