The peaceful city of Ayase is suddenly attacked by a monster, Grigio Bone.

While younger brother Isami is ecstatic about his new powers, elder brother Katsumi on the other hand is in fear of this great power.

Katsumi is a well-known pitcher in his high school; he turns down the offer to play professionally, he sets up a retirement match for his sandlot baseball team's head coach; but his injuries from previous battles affects his pitching.

Yuha Ninomiya continues to fail and injur herself with her wings invented in college; Nagisa Isami gets involved with his classmate's reckless challenge and both aim high for the sky, until storm-producing monster Guebasser appears.

Kaoru Komaki, an ex-cop who Katsumi and Isami were very fond of as children, is back; she is captured by Mecha Gomora.