Natsukawa accidentally crosses an alternate Ultra universe similar to the world of "New Ultraman" and becomes Shinji Shinnaga, who has just separated from New Ultraman. It's just that, as a former Ultraman human body, Xia Chuan was surprised to find that he had become an outcast of the times. Five years have passed, Ultraman has been forgotten by humans, the Kamen Rider era has come, and Natsukawa, who has no Ultraman fighting evolution system, has not only lost hope of becoming a life form of light because of Zoe, but also frequently blocked Kamen Rider qualification applications...... This is the story of an out-of-gas hero who seeks a path to hyper-evolution in the dark universe.