The heroine Shen Liuyun was once the last descendant of the feared "Devil Cult". After getting tired of killing, she washed her hands in a golden basin and lived in seclusion in the busy city to become an inheritor of intangible cultural heritage performing "Sword Dance". The male protagonist Pei Jingzhou appears to be a powerful fund manager, but in fact he is the sword holder of the righteous leader's family, and has been tracing the truth of the martial arts case back then.
During a live broadcast of intangible cultural heritage, Shen Liuyun's subconscious move of "cutting off the water flow" shocked the entire network and exposed his whereabouts. Pei Jingzhou pressed forward step by step, trying to uncover her "vest". The two started a game between ancient martial arts and capital tactics in the reinforced concrete of the modern city. As the truth of that year was peeled back layer by layer, and the so-called "good and evil" were reversed, the two had to go back to back, using the three-foot green sword in their hands to fight their way through this world corrupted by money.
