Jupiter is one of the residents of a rental house in a place called Solar System. He and 9 other people have been occupying the Solar System for a long time. Jupiter is also an arrogant person and doesn't want to lose, he also always fights with Saturn because of trivial matters. Everyone here is fed up with Jupiter's arrogant behavior, except for Earth, a boy who is younger than him. Earth has always been kind to Jupiter and that makes Jupiter attracted to him.