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A mysterious alchemist studies and experiments to create a "living creature" called Chemie. Unfortunately, the card that should have been well-kept, accidentally slipped together. A high school student named Houtarou Ichinose accidentally got involved and was given a task to return all the Chemie that was released around the world. He transformed with Grasshopper Chemie, Hopper 1 and Steam Locomotive Chemie, Steamliner to become Kamen Rider Gotchard
