Su Chenyu, a special forces soldier carrying old injuries and with a bullet still lodged in his body, applies to become the personal bodyguard of Zhao Xueyan, the female CEO of Huayang Group, to repay his enormous medical debts. Cold, aloof, and suspicious, Zhao Xueyan conceals a business secret behind her family's affairs that has attracted the attention of an organization called "The Net." She repeatedly faces power struggles, kidnappings, and assassination attempts. Su Chenyu risks his life to protect her, gradually uncovering pieces of the conspiracy through one deadly confrontation after another. From mutual wariness to tacit trust, the two eventually join forces to set a trap and wipe out the mastermind and all his accomplices. When the smoke clears, they put their past behind them and stay together amid the simple joys of everyday life, revealing the true meaning of protection and redemption.