Good Mother 3: Sun-young and Jun-young are living together. However, they have been unable to pay the rent for several months and listen to the pinzan from the landlord. Eventually, after worrying, he goes to Jun-young's father's house and asks for help. But there, the father's new lover, Ji-young, greets them. Sun-young and Jun-young are unable to borrow money and live in the house for the time being. But after that day. Jun-young's father Dae-woong's eyes keep seeing Sun-young's short mini skirt. Ji-young is interested in Jun-young, who is young and manly…