Traveling through the world of Ultraman Rob, Fang Hai came to Lingxiang City with the power of Ultraman Rob's transformation. In order to complete his half-year survival mission and gain the opportunity to return to his original world, he chose to keep a low profile and live in seclusion on the street corner to run a Chinese restaurant. He meets Aizen Cheng by chance, gets to know the Minato family, and accidentally discovers the secret of Dark Orb. When the Rob brothers were defeated repeatedly, the genuine Orb who had hidden his strength quietly appeared on the scene. In the city where monsters were rampant, he could win or lose with the light of his hand as an idler.