Dr. Tatsunoko and his daughter Asari venture underwater to investigate mysterious radiation, where they uncover a giant shell containing a globe that emits the energy. Inside the globe lies an object resembling a compact with a message revealing that a space alien from the near-extinct Planet of Parlum is sealed within. The alien, named Ace, emerges with wild behavior and possesses superhuman abilities fueled by space food. He utilizes a Silver Ring, which gathers aerial energy to enable flight and serve as a combat weapon. Assisted by Asari, a robot dog named Ibo, and Hermit Crab Reporter, Ace bravely tackles challenges posed by mystical robots and hostile space invaders.