A kid walks out of a mountain cave with impossible strength and no explanation for who he is, and that mystery never gets solved, it just becomes the entire point. Shadar doesn't save the world because he's special; he saves it because he shows up, again and again, with his dog at his side. The real horror isn't the invaders; it's watching a child become a weapon because nobody else will, and the show refuses to make that beautiful or noble.

Earth faces an invasion by the Ghostar, and help arrives in an unexpected form: a young boy who emerges from a cave on Mount Fuji. His name is Shadar, and nobody knows where he came from. He is as strong as fifty men and never loses his nerve. Together with his loyal dog Pinboke, he fights to protect the world from the invaders. The long-running 1967 short-format series mixes adventure with horror across 156 episodes.