She lost her fiancé in an accident, but her beloved saved another man. This is a story about them, describing a man and a woman who met by fate, starting with a bitter "goodbye", and composing a poignant and heart-wrenching love. On the day when Saeko (Kasumi Arimura)'s boyfriend Yusuke (Toma Ikuta) proposed to her, a car accident took his life, leaving her with the loss of her lifelong love. Then, a man named Naruse (Kentaro Sakaguchi) received a heart transplant from Yusuke and was reborn with the firm company of his wife Miki (Yuri Nakamura). The lives of these two men and women should have been like parallel lines, but they had a strange intersection because of fate. In the dark, Saeko and Naruse met, and Naruse began to feel Yusuke's memory slowly awakening in his heart. The heart-wrenching pain of saying goodbye is inevitable, and saying goodbye to your beloved is a topic that everyone must face as a human being. This love story is set in Hokkaido and Hawaii. Against the backdrop of stunning scenery, the fates of this man and woman meet and intertwine. See how they find hope in the timeless memories of loving and being loved, and let the moments before the last goodbye become the driving force for the continuation of life.