After a fortuneteller tells her that she's going to die soon in 3 days, An runs into a handsome but weird stranger who keeps telling her that he's The Death. His mission is to kill her with his kiss. When An finds out that handsome man is actually The Death, she asks him to let her do things that she always want to do in her life before she dies. Along the way, An falls more and more in love with the stranger. However, if Du fails his mission, he will be punished by his father.