Lee Je Ha followed in his father's footsteps, who was considered a master and became a movie director. He received worldwide attention for his debut film and was called a genius, but he became obsessed over a possible sophomore jinx. Over the past 5 years, he has not worked on anything. Deciding to end his 5-year hiatus, he begins to work on his second film. The screenplay tells a romance story involving someone with only a limited lifetime.
While researching the movie, Lee Je Ha meets Lee Da Eum. She is an aspiring actress and suffers from a rare, incurable disease; she doesn't know how long she has left to live, but is very social, and everyone in the hospital knows her. Lee Da Eum advises Lee Je Ha on his movie and becomes interested in the script; this becomes a turning point for her as an aspiring actress. As they work on the romance movie together, Lee Je Ha and Lee Da Eum, who have their own illnesses, form a romantic relationship.
