Hideyoshi is a destitute youngster in the near future who survives by scamming other kids in basketball contests. But now he's been drafted into a professional squad—a professional club with a very specific purpose. Once upon a time, humans ruled the sport of basketball. However, times have changed, and now the physically superior alien players have taken over the game, with just a few human players remaining. However, Hideyoshi's squad—the first all-human team to play in the Space League—plans to alter all of that and bring the championship back to Earth.