Yukio "Koyuki" Tanaka, fourteen, is a depressed young man with no aspirations in life. This all changes when Koyuki saves Beck, a strange-looking dog, from being tormented by a gang of local youths. Ryuusuke "Ray" Minami, the dog's owner, is a 16-year-old guitarist and former member of a prominent rock band. Koyuki runs with Ray again in a diner, and the older lad takes him to his previous band's meeting site, where he dazzles Koyuki with his incredible guitar talents. As he becomes more attracted in the splendor of western rock culture, Koyuki resolves to pick up a guitar and assist Ray in realizing his ambition of heading the greatest rock band. The two brothers, together with Ray's younger sister Maho and a few other members,