Ren Xiaoxian, a third-rate ballroom dancer, and her husband Huang Lezong were newly married on their honeymoon, but Huang Lezong disappeared while surfing. Mei Chaoying, her mother-in-law, was deeply shocked and suspected that Xiaoxian had killed her son in order to seize the family martial arts company "Zhengzong". Chaoying regarded Xiaoxian as the biggest threat in her life and decided to drive her away quietly. After repeated failures, Xiaoxian not only believed in Lezong's feelings, but also moved into Mei's house to live with her mother-in-law. Chaoying was helpless and tricked Xiaoxian, who didn't know kung fu, to deal with the martial arts champion who came to challenge the club, but she didn't expect Xiaoxian to win a big victory. The family business "Zhengzong" was in crisis. Chaoying tried her best to support it, but was defeated by her ex-husband Huang Danqing's conspiracy. In the crisis, Xiaoxian put aside her past grudges and took care of her mother-in-law who was hit hard. Chaoying, who had lost her memory, not only played the long-lost boxing, but also forced Xiaoxian to take over "Zhengzong". Xiaoxian, who was deeply trapped in the quagmire of emotion and power, was forced to agree, but she didn't know that it was the way her mother-in-law came up with to keep her. When the mother-in-law and daughter-in-law joined forces to thwart the conspiracy of Huang Danqing and others to revive the family business, Huang Lezong also returned from overseas after many hardships, and the family finally waited for their happiness.