My Girlfriends Sister

The bachelor next door falls in love with the irresistible, sexy charms of a big-breasted married woman. I love you, noona!

Mi-yeon, a mature-looking married woman, had a serious marital fight due to her husband’s gambling and indifference towards her, so she leaves their house and calls her friend Yoo-jin, her single friend with a free-spirited personality, to ask her to stay with her for a while. Upon arriving at her friend’s house, she accidentally witnesses Yoo-jin having sex with Jae-cheol, a free-spirited bachelor next door. One day, Yoo-jin arranges a dinner for Mi-yeon with the purpose of introducing her to Jae-cheol’s older brother, Jae-yeong. Jae-cheol, who likes the glamorous and innocent Yoo-jin, begs his older brother to come with him for the dinner. Mi-yeon gradually falls in love as she meets Jae-yeong, who also loves and cares for her. The two eventually have passionate sex. But the next day, Mi-yeon’s husband, So-tae, comes to reconcile with his wife and promises that he will do well in the future.

Who will Mi-yeon choose between her new suitor and her husband?