Shen Yuzhu is the legendary "Golden Abacus" who uses ledgers as a blade and money as a conspiracy. The Golden Abacus Pavilion in charge has business lines all over the world. However, in order to track down an old case, she is accidentally bound to the crazy and rebellious swordsman Ji Qingxuan - she pays him a salary of five hundred and two months to protect him, and he relies on her to open up medicine routes to suppress the bone-corrosive poison.
When the abacus collides with the sword, is it a plan of mutual use under the money contract, or a two-way redemption in a desperate situation?
Concept: A true bond has nothing to do with interests, but the warmth that illuminates each other in the dark.