Since losing his beloved wife 10 years ago, Keisuke vows to never remarry. He wants happiness for his only daughter, Mai, but struggles to make a good living and their communication suffers. That is until the appearance before them of a mysterious young girl carrying a schoolbag who claims to be Keisuke’s wife. Reincarnation? An offbeat family life ensues comprised of devoted husband Keisuke, his former wife (now a grade schooler) and a daughter who won’t grow up.