Gamera dies in 1973 during a fight with the Gyaos. Thirty-three years later, a boy finds a mysterious egg from which a new Gamera hatches. When a man-eating creature named Zedus shows up, it's up to the small Gamera to save the world.

In 1973, Gamera sacrifices his life to rid the world of the Gyaos once and for all. Thirty-three years later, a small boy, whose father witnessed the 1973 event, named Toru finds a mysterious egg. From it, hatches a small Turtle. Toru and his friends raise the turtle, who turns out to be a small Gamera. After a new man-eating creature named Zedus shows up in Japan, it's up to the small Gamera to save the world as the previous Gamera had done before.—The_Depressed_Star_Wars_Fan