The story revolves around two students in Tokyo striving to reach "the top," a symbolic status only attained by the world's rich and powerful elite. Only members of the wealthy classes know about this summit. Haru lives an ordinary life with his mother after his father disappeared, while Ryo is the son of a wealthy family. After a fateful encounter, Ryo offers Haru to join him in his quest for the top, and so their journey begins.