Yuno Gasai, a typical high school freshman, enjoys a harmonious relationship with her parents and a small group of friends. Despite this contentment, she senses a profound absence in her life, as if a vital connection had been severed long ago. Following a beach outing with her classmates, Yuno is plagued by cryptic messages from an enigmatic voice in the dead of night. This voice hints at a crucial individual missing from her existence and urges her to seek him out. Transported to an enigmatic realm, Yuno's sole purpose becomes reuniting with this elusive figure she struggles to recollect. Undeterred by challenges, she embarks on a relentless quest to rediscover her lost love.