Wu Yi, who used to be an excellent Taekwondo athlete, found her husband cheating on their 7th years of anniversary marriage. She was then divorced her husband. Not only did all the property belonging to her ex-husband, but she also lost her child custody. Wu Yi then plan to work in order to fight for the child's custody. She start to work in a security company and became a professional female bodyguard. She assigned to become a 24/7 bodyguard of a wealthy, cruel and handsome man named Hou Zhi Rong who had many enemies and will later help to get her child back.