The tale is set in the prestigious school of Shishidou, attended by the rich and elite. Tom Shirasagi, a rare transfer student from a public school, fearlessly challenges his privileged peers to gambling matches, vowing to bring the whole school to its knees. Though nobody knows his true intentions or motivation for attending Shishidou.
As Tom competes, his impressive intellect and expertise are revealed, utilizing a range of tactics both physical and psychological to secure his victories. His true motives are kept secret, leaving readers to ponder his ultimate aim with each match. Tom's tricks and strategies are eventually revealed, proving to be effective not only in the gambling world but in real-life scenarios for those who have the knowledge to execute them.
As the story unfolds, Tom interacts with key characters such as Mika Shishidou, the grand-daughter of the school's headmaster, and Abidani, the dorm superintendent with a malevolent and vampiric appearance. Furthermore, Tom's past is slowly revealed, leading to unexpected plot twists as the narrative progresses.