During an expedition in the Amazon rainforest, a group of scientists discovers a prehistoric creature known as the Gill-man. As they try to study and capture the creature, it becomes increasingly aggressive and starts attacking the expedition members. They must find a way to survive and escape the creature's clutches.

In 'The Creature Walks Among Us,' a scientific expedition in the Florida Everglades captures a creature with both human and aquatic traits. The creature undergoes a transformation that leaves it more human-like, but also more dangerous. As it continues to rampage and kill, the scientists must find a way to stop it before it causes more destruction.

Revenge of the Creature follows the story of a captured prehistoric amphibious creature, known as the Gill-Man, which is brought to an aquarium for display. The creature manages to break free and goes on a rampage, causing chaos and endangering the lives of people. It is up to a group of scientists and experts to capture or eliminate the creature before it causes further destruction.