Different destinies. Everyone has dreams, and they still exist. Middle-aged people, in particular, hold such thoughts deep within their hearts. Sometimes, we feel like we're trapped on an island. Even though we might feel free in the center of our minds, there's always a loneliness that surrounds us on a solitary island within our hearts. This is a story about such a man and woman. Through their journey on the island, it tells of sudden infidelity, mutual empathy, inevitable destiny, a mysterious death, and an immortal bond that connects them all, even in death.