President, Madam, She Started Lending Knives on Credit Again.

The script focuses on Tu Shanjiu, the descendant of the credit knife. In order to break the family's short-lived curse and accumulate points for the underworld assessment, he goes down the mountain to enter into a marriage contract with Xie Shiyu, the richest man in Nancheng. She uses the sword as a weapon, follows her words, and travels around the world to deal with supernatural cases such as evil spirits in wealthy families and corpse poison, and collects karma as retribution. During the process, she and Xie Shiyu developed feelings from their contractual relationship, and used their supreme luck to neutralize the backlash of fate. They also joined forces with the underworld office, the police and other forces to uncover the ugliness of human nature and evil conspiracies. In the end, Tu Shanjiu rebuilt his reputation as a credit card holder while liquidating his past and present debts, and struggled to challenge fate and protect the right path in the world.