Lian Qiang is an orphan who grew up hating criminals and later became a member of the Orphan Mission. As an intelligent and unfazed woman, she is given a mission to protect the son of a billionaire. Lian Qiang, a skillful woman, is always excited about the missions assigned to her. She's one of the members of Orphan Mission, it is a unique special organization group that consists of people who no longer have families. The purpose of this organization is to transform the lives of its members and empower them to make a significant contribution to society. This organization encourages every orphan to join and considers it an obligation to be part of this special group. Lian Qiang, once had a family. However, her life took a tragic turn when a notorious group caused the death of her father. Meanwhile, her mother succumbed to disease. As an only child, she was left alone in the world the reason why she was part of the organization. She practiced with herself well and did her best no matter what. Fighting with criminals is the only thing she could make her feel better. She hates them so much and she's planning to deplete them as soon as possible since that is the only way they could repay her father's life. Meanwhile, Zhang Jin, known as a party-goer and a source of trouble for his family, Zhang Jin's reckless behavior has earned him threats from a notorious group named the Black Wing Society. To ensure his safety, his father entrusts him to Lian Qiang's care. Though Lian Qiang was excited about accepting assignments, it was her first time rejecting this new mission. But would she agree? or will Zhang Jin allow someone to protect him? And will Lian Qiang be able to successfully complete her mission?