- The heroine Shen Qingwu: On the surface, she is "the most scumbag in the capital", but in fact, she is investigating the unjust case of her brother. Using the Fengyue Field as a chessboard, she uses "scum" as a cover to get close to the powerful people involved in the case (the third prince, the son of the Minister of Libu, and the young master of the Jianghu), and collect criminal evidence.
- Scumbag boy group: Rivals with different agendas - the third prince treats her as a pawn, the son of the Minister of Civil Affairs fights back after being sincere, and the young master of the rivers and lakes develops appreciation through testing, forming a multi-party game.
Purpose: Anti-routine