In order to protect the survival of the troupe, Su Wanqing, the leader of the palace troupe, was forced to marry Xiao Chengyu, the prince of Yinfeng. The two were originally a "contracted couple" who each wanted what they wanted, but after their marriage, they became involved in an interlocking "court game" - from solving the palace banquet exam questions set by the legitimate princess, to investigating the unsolved cases of the old dynasty ten years ago, to dealing with fiefdom rebellion and the battle for the edict. Su Wanqing used the disguise of the theater troupe "Thousand Faces Magic" to get information, Xiao Chengyu used the secret guard network to break the situation, and the two gradually lowered their guard during the cooperation, from "game teammates" who respected each other like guests, to destined people who share the same mind. In the end, they worked together to uncover the mystery of Xiao Chengyu's prince's life experience, and jointly controlled the power of the court.