Shortly after Iroha's son became a working adult, his girlfriend's pregnancy was discovered, and they decided to get married. The girl's father, who couldn't accept the man who irresponsibly impregnated his beloved daughter, turned his anger towards Iroha, who is the mother. And at the meeting of the two families, the father, who met Iroha for the first time, was captivated by her beauty and devised a humiliating revenge plan.