Ji-hyeon, who fell lonely because her husband went on a business trip, calls her husband's friend and calls her. Ji-seong approaches Ji-hyeon, who was drinking alone, and comforts her. In fact, Ji-seong, who wants to sleep with Ji-hyeon, slowly seduces her and takes her to bed.​

Woo-seok happens to meet Gyeong-seo on the street and heads to Gyeong-seo's house. Woo-seok against Gyeong-seo while talking to Gyeong-seo in Gyeong-seo's house. But Gyeong-seo is busy, so she doesn't want to meet a man. Rather, Nam-joo, who lives with Gyeong-seo, falls in love with Woo-seok, and the two of them fall in love in a daze. When Nam-joo fell in love, she felt sorry for the longitude of being alone. Nam-joo decides to connect Gyeong-seo and Jeong-woo by making plans with Woo-seok. In the end, Gyeong-seo and Jeong-woo share love with each other through their performances. But Woo-seok can't erase the scripture from his mind.

Ji-eun was having a hard time because of her different taste in sex with her husband. She talks to So-hyeon next door about this and she suggests and new kind of 'sex therapy'; to switch husbands for a week.

Jin-seok and Yeo-eun are a loving couple. And Yeo-eun's older sister, Su-a, who came to the couple's house. When Jin-seok goes to the living room, not awake from the alcohol he drank the day before, he sees his naked wife after taking a shower, and she is overrun with lust. Su-a decides to appease her lust by intimidating him as she forgets his exhilarating taste.