The gambling games continue...and this next game has truly lethal consequences. Will Yumeko be able to figure out its secrets in time to keep from losing her life?

Sayaka has had just about enough of Yumeko Jabami! The student council secretary wants to rid the school of Yumeko's poisonous influence once and for all, so the president sets the stage for the craziest gamble yet-the enigmatic Tower of Doors! Will Sayaka's cold logic triumph over Yumeko's chaos?