The number one killer, Yan Luo, was betrayed and died, and was reborn as Jiang Yu, the eldest daughter of the Jiang family. Faced with the desperate situation of having her hamstring broken and about to die tragically, she used her healing powers to restore her legs, and took the initiative to win the match for the mysterious boss Fu Chen in the boxing ring, binding him to him on the condition of "taking me away". With the help of Fu Chen, she escaped from danger, held an engagement party, exposed the scandal about her biological father, and liquidated the enemies of the Jiang family. After discovering that Fu Chen was poisoned by cold, she offered to detoxify him in exchange for his help in revenge. The two gradually developed a deeper relationship during their cooperation, and jointly faced many crises from their families and former killer organizations.
