Jack Crabb is 121 years old as the film begins. A collector of oral histories asks him about his past. He recounts being captured and raised by indians, becoming a gunslinger, marrying an indian, watching her killed by General George Armstrong Custer, and becoming a scout for him at Little Big Horn.
An eccentric man aged about 40 lives alone in a decrepit house in Tokyo. He periodically transforms into a giant, about 30 meters tall, and defends Japan by battling similarly sized monsters that turn up and destroy buildings. The giant and the monsters are computer-generated.