So Hye, a dedicated scriptwriter, finds herself writing a drama about cancer just as she's diagnosed with breast cancer, with only five months to live. She decides to embrace life, fulfill her desires, and tie up loose ends. However, her plans take an unexpected turn when Hae Sung, a famous actor and her first love, reappears. Despite their initial clashes, they develop feelings for each other. On the other hand, Joon Ki, her doctor and friend, also vies for her affection, understanding her inner struggles. As So Hye faces a difficult decision between the two, time is running out. How can she leave without regrets? (Source: MyDramaList)