Creature from the Black Lagoon: In the upper reaches of the Amazon River, a scientific team discovers a prehistoric Gill-Man in the legendary Black Lagoon. The creature is captured and falls in love with the female assistant of the leader of the research team. When the lonely creature escapes and kidnaps her, the scientist mounts an effort to reclaim his sweetheart and return the creature to his watery home. Revenge of the creature: The Gill-Man is captured by scientists and transported to an aquarium in south Florida. He is attracted to the lovely female scientist, manages to escape, and kidnaps her. The creature walks among us: The Gill-Man is captured once more and turned into an air-breather by a rich mad scientist. This makes the creature very unhappy, and he escapes, wreaking havoc as he goes.