Min-ji is an ordinary housewife with a dark secret. Unlike the wishes of her husband, In-gyu, who has a business running resorts, they don't have a child yet. They've tried test tubes and home remedies, but nothing has worked.  Her husband and her in-laws finally decide to get a surrogate mother, and Min-ji has no choice but to agree to it, as she is worn out from their pressure. Hometown friend Jeong-ah comes knocking on the door. Min-ji is uneasy with Jeong-ah around, as she knows her past secrets, including the time she lived with someone else and had an abortion. On the other hand, In-gyu has completely fallen for bold and sexy Jeong-ah. Like a crow that nests in another's nest, Jeong-ah takes over Min-ji's place slowly and gradually. Min-ji is driven into a corner, so she meets Jeong-ah's husband, Joo-sik, to stop her. However, she falls for his trap and is used to replace his wife who ran away from home.

I Have Two Wives

Seon-yeong's husband suddenly loses his job, so a friend introduces her to a sexy substitute driving gig. She hesitates, but decides to do it when she hears it makes more money than an average sub-driver. Then one day, Seon-yeong meets Dong-hoon, the guy next door, while on the job and they have an affair.

My Wife's Part Time Job

Se-min lives alone. He was having a good time with his girlfriend, Mi-ho, when they suddenly feel someone's eyes on them and turn around to see a woman looking at them with a blank face.  It turns out the woman is Se-min's mother's friend, Ji-hye. She's packed up her things from abroad and moved back to Korea very suddenly. She'd called her childhood friend, Se-min's mother, and they decided she would live with Se-min for 3 days. Mi-ho is angry about Ji-hye.  She tells Se-min to make her leave, but he can't do that and Mi-ho leaves angrily. Se-min and Ji-hye are living together for 3 days. Ji-hye comforts Se-min with some drinks, but he blacks out, only to wake up the next day and retrace his memory to the hot night they had.