A veteran assassin takes on a job to kill a young woman. While staking her out, he discovers she is blind and hesitates. He then unexpectedly comes into contact with her and learns that she lost her sight three years ago after her philanthropist father was assassinated—grief-stricken beyond measure. The assassin's heart wavers and he falls for her, delaying the completion of his mission. His agency notices something is wrong and sends people to liquidate him. After surviving a bloody fight, he confronts the boss—only to learn a shocking truth: this assassination was a carefully orchestrated revenge plot by the woman herself. She deliberately commissioned a hit on herself, intending to reform the assassin and trigger internal chaos within the agency to take her revenge. The assassin, now a changed man, is caught in an impossible dilemma.