The hero of the story is Kappei Sakamoto, a high school student with amazing athletic abilities who joins the basketball team of Seirin High School and quickly becomes one of the most skilled players.
In the first episode, Kappei meets and becomes enamored with Akane Aki, a sweet, pretty girl who is quite athletic herself (she later joins the school's ping-pong team) and signs on as assistant coach of Seirin's basketball team.