Fan Chuan was an orphan, adopted by the assassination organization Shadowkill Sect and raised to become a ruthless, top-tier assassin. During an assignment, he discovered that his target was none other than Su Yuqing, the chancellor's daughter who had saved his life when he was a child. His conscience drove him to abandon the mission, betray the organization, and protect her. As they spent time together, feelings blossomed, but the gulf between their identities kept him from confessing. When the chancellor discovered Fan Chuan was an assassin, he mistook him for a spy planted by political rivals and drove him away. To protect Su Yuqing once and for all, Fan Chuan assassinated the chancellor's political rival alone, then fought Shadowkill Sect single-handedly, perishing alongside the organization. When Su Yuqing arrived, all she saw was the candy he clutched in his hand, the one she had given him as a child. Grief-stricken, she was inconsolable. Years later, at a temple fair, she spotted a familiar figure and ran toward the silhouette that might change her fate, without a second thought...