After Dai was saved by the Flash from an Alien Hunter, he gained great strength training on the rocky Green Star, enduring the most physical pain compared to his teammates.

Dai with the others are being called by Jin to the Flash Star. They are informed that Reconstructive Experiment Empire Mess has set their eyes on Earth. They head to Earth using Round Base without permission to the elders of the Flash. As they are departing, Mag seeks them as intruders and shoots them, only for Sara switching it off by removing its floppy disc and Dai punches it. Arriving at Earth, they shoot some Laboh Fighters using their machines (Dai and Sara use Jet Delta). After they land on Earth, they meet Mess' generals, a band of Zolohs, and The Baraboss, owing Mess revenge for 20 years. They attack the Zolohs, before the generals then attacks them, with Leh Gals attacking Dai. Then, they change into Flashmen and fight Zolohs using their signature weapon (in Green Flash's case, the Prism Kaiser). After that, they destroy The Baraboss using Rolling Vulcan, making the generals retreat into their base.