In a world overrun by immortal vampires during a harsh winter, humanity struggles to survive within the confines of a fortified city. Amidst relentless vampire assaults, a human soldier, Momo, crosses paths with Fiine, the vampire queen, during a chaotic battle. Drawn to Fiine's compassion towards his friend, Momo ventures into enemy territory. United by a shared passion for music and a yearning for peace, Momo and Fiine embark on a daring quest to find a rumored haven where vampires and humans coexist harmoniously. However, their journey is fraught with danger as they become targets of both races, testing their resolve and bond as they evade capture and strive to reach their elusive sanctuary.