Yumeko Jabami's star is on the rise at Hyakkao Private Academy, while the student council's reputation is on the decline. The council's weakened power has given rise to discord among the students. To restore the balance, the council president Kirari Momobami plans to gamble on the election for the next president. Each student starts with one chip, and the one with the most chips after 30 days becomes the new head of the Momobami Clan. However, the stakes are not limited to chips, as students are willing to risk anything to win the presidency. Yumeko Jabami is determined to win, no matter what she has to wager.