Donna wakes up in the hospital with amnesia and a baby. At the same time news breaks of a kidnapped baby causing Donna to question if the baby is hers.

Twelve years after their beloved eldest son, Junpei, drowned while saving a stranger’s life, Kyohei and Toshiko welcome their surviving children home for a family reunion. Younger son Ryota still feels that his parents resent that he isn’t the one who died; his new wife, Yukari, is awkwardly meeting the rest of the family for the first time. Daughter Chinami strains to fill the uncomfortable pauses with forced cheer.