The narrative takes place at Shishidou, an institution known for educating the wealthy and elite. Tomu Shirasagi, a gambler, is an enigmatic new transfer student who has transitioned from a public school, not a prestigious private one, into this elitist milieu. Upon arrival, he issues a challenge to any student, boldly declaring his intent to bring the entire school to its knees through a series of gambling matches. The motives behind his enrollment and actions remain shrouded in mystery.
Throughout each match, Tomu exudes an unparalleled coolness and skill. His strategies encompass both psychological and physical maneuvers, ingeniously crafted to secure victory. Spectators are left constantly pondering his next move, questioning his true intentions and deciphering the underlying dynamics at play. As each game concludes, the intricacies of his tactics come to light—strategies that could work in reality but demand exceptional talent or fortune.
The storyline pivots around the diverse matches Tomu engages in and the interplay among characters such as Mika Shishidou, the stunning granddaughter of the headmaster, characterized by her brilliance yet disdainful demeanor, and Abidani, the vampiric-looking dorm superintendent and current primary antagonist. Abidani's sadistic nature drives him to force Tomu out of the school—or worse, have him killed. As the plot thickens, further revelations about Tomu’s past emerge, leading to unforeseen twists and turns.