Jung Hui Wan is a 24-year-old woman who has lost the will to live. She lives her life as a recluse. One day, her childhood friend and first love, Kim Ram U, appears before her. He died six years ago and is now a reaper. When Ram U was alive, they were best friends and had feelings for each other. For personal reasons, they never told each other how they felt. An accident later caused Ram U’s death. Now Ram U tells Hui Wan that she has only one week left to live. He keeps telling her that if she wants to die in peace, she must call out his name three times. Hui Wan, who lives a solitary life, doesn’t want to be separated from him again and refuses to call out his name. Ram U has her make a bucket list, and together they work through it.