The stage of the story is set at the 122nd anniversary of the establishment of the private Baikao Academy. This is a prestigious school with the children of big figures in the financial sector. It has a traditional and prestigious school. It is gambling skills that determine the class of students. The winner gets status and reputation, but loses. The person will be deprived of property and dignity. The story begins with the appearance of the mysterious transfer student Snake Yumenko (Hamabe Miwa). Mengzi is usually elegant and quiet, but once she starts gambling, she will become a \”gambling witch\”. She played with her opponents with extraordinary insight, memory and negotiation power, even if she took great risks, she would have to decide the outcome, and finally push them down the abyss of destruction.