High school student Tazuna Takatsuki is a kind young fellow who is in love with mechanics, stopping anytime to help anyone fix anything problems that have to do with mechanics, and he is almost always successful. When he goes to an university to meet a scientist named Nagamasa Makihara who has requested his help in fixing something, only to come across a hospital room where a young girl with short white hair is lying unconscious on a bed. Reminded strongly of his deceased sister, Tazuna approaches the girl, only for her to wake up and reach for his hand. The moment their hands make contact…