In Gamera 3: Revenge of Iris, Gamera, the giant turtle, battles against Iris, a giant bird monster seeking revenge. The movie explores the intense clash between the two creatures and the destruction they cause in Japan.

When a giant turtle emerges from the ocean, it is up to Gamera to protect Japan from a giant bird monster. As they engage in an epic battle, the fate of the country hangs in the balance.

Gamera, the giant turtle, returns to protect Japan from an invasion of deadly alien plants known as Legion. As the city is thrown into chaos, a brave scientist and a team of experts must find a way to stop the unstoppable creatures before they destroy everything in their path. With the fate of the world hanging in the balance, Gamera must use all his strength and power to defeat Legion and save humanity.