A wandering fortune teller foretells that Emma and her sister Rachel will each give birth to a reincarnated demon and angel. In their past life, Emma raised her demon son into a Harvard prodigy through painstaking devotion, while Rachel's angel daughter grew timid and mediocre—the sisters, torn apart by their children's unequal success, fell to their deaths in a brawl. Reborn, an unwilling Rachel knowingly insists on swapping the fetal souls with Emma. Emma plays along, raising her sweet, well-mannered angel daughter Lily with care, while Rachel blindly spoils her demon son Bruno. Growing up tyrannical and reckless, Bruno spirals into ruin—killing his own father and assaulting others. Realizing he is beyond saving, a remorseful Rachel ends her monstrous son's life before leaping to her death. Lily, meanwhile, flourishes and enters Harvard. Angel or demon was never fate—a child's life is shaped by how parents raise them.
