The story centers on a girl who is told she only has six months to live. In the spring of her first year of high school, she confessed to a boy who is in the same class, even though it's their first time meeting. The two gradually grow closer as lovers, and on her birthday, they go to see the 'Strawberry Moon', which is said to be a time when you will be forever bound to the person you love if you watch it together.
Min Su, a playboy who believes there's no true love, can't stand long-term relationships. However, the fate takes him to a dazzling beauty, Hye Won, who just escaped from the boring hospital. She leaves a strong impression on Min Su. Again, chased by a nurse, as Hye Won sneaks into the men's room at the hospital, their 2nd encounter is made. And Min Su gets totally captivated by this bold lady, although Hye Won tries to resist him worrying that their love might expire soon due to her terminal disease.
