Directing
Min-soo and Jae-hyeok is in a good father-and-son relationship. But one day, Min-soo brings Jae-hyeok's young stepmother, Da-hee. Jae-hyeok leaves home to wander around, ran into Da-hee's friend, Na-yeon, and had a little talk. Na-yeon calls Da-hee... Da-hee goes home with Jae-hyeok, and Min-soo doesn't care much. Jae-hyeok tells Da-hee how he feels. Meanwhile, Min-soo who disapproves Da-hee and Jae-hyeok's relationship, calls Na-yeon to kill some time. And Na-yeon who is worried about Da-hee and Min-soo crafts a new plan...
Cha-wook and Min-joo are about to get married. Cha-wook proposes a couple trip to Yong-woo’s wife who is his junior at work. Ji-yeon doesn’t like uncomfortable trips but Yong-woo’s boss forced her. The trip has been decided and Cha-wook plans to stay with Ji-yeon, who he’s been eyeing. Min-joo is forced to join. On the day of the trip, Min-joo finally tells everything to Ji-yeon and Ji-yeon decides to use Cha-wook.
Da-hee gets married to Min-soo who is older than her. Thanks to him, he also gets a son who is not too old, Jae-hyuk, who she tries to get acquainted with, albeit awkwardly. After staying with Na-yeon, she suddenly has to meet Jae-hyuk, and Na-yeon has a date with Jae-hyuk. Min-soo is surprised to find three people coming back home from a date. It made him angry to see his son with two women. Right away, Min-soo seeks Da-hee and asks about Na-yeon. Na-yeon met Min-soo secretly. However, Da-hee who is aware of Min-soo and Da-hee's relationship, shares this fact to Jae-hyun.
Sang-jin, who was envious of her neighbor after getting a beautiful wife, Ask your wife's friend Gian to take over the son's extracurricular teacher, Sang-jin, who left work early, accidentally sees Gian's shower. A man who wants to have sex with his son's tutor, And a son who wants to have a good time with a young stepmom, Ji-an and Jin-hee, who want money, are disappointed with her husband, and Bin-jin gives her body to a young son.
Hyeon-woo loves Seo-yeon for a long time and has been confessing his feelings constantly, but Seo-yeon refuses Hyeon-woo every time. Bo-ram and Min-jae always come together and drink together whenever Hyun-woo is dumped. However, Min-jae hides his relationship with Seo-yeon to Hyeon-woo. Min-jar tells Seo-yeon to stop teasing Hyeon-woo but Seo-yeon just enjoys the situation. Bo-ram who used to like her childhood friend Hyeon-woo, holds a special class to boost his confidence. He has become depressed after being dumped by Seo-yeon. Hyeon-woo is thankful for meeting Seo-yeon because of her. Only after some time did each of them know their real feelings.
Ga-yeon comes to Min-jae's house where he lives alone, and decides to live there. Min-jae is curious about Ga-yeon who he haven't seen in a long time. One day, Geon-soo goes to Min-jae's house to pick up some stuff and meets Ga-yeon. Ga-yeon seduces him. Min-jae finds out about it when he phoned Geon-soo. Da-hae meets Min-jae to become sex partners and frequently contacts each other. Min-jae gets angry at the sight of Geon-soo wearing only underwear at his house. Gayeon comes out to meet her friend Da-hae after a long time. Ga-yeon and Da-hae who were drinking, join after seeing Min-jae and Geon-soo. That night, Min-jae gets drunk and had sex with Ga-yeon and finds out that Da-hae is not in a relationship with Min-jae. The next day, Ga-yeon knows the relationship between Da-hae and Gun-soo, and she brings the four people together...
Min-soo and Yoo-ri talk about marriage while they are on a date. Yoo-ri goes back home and tells Jeong-hee about marrying Min-soo but Jeong-hee is shocked as she has a crush on him. She has a drink with Sung-hoon and gets drunk telling him about the soon-to-be married couple. Sung-hoon who has a crush on Jeong-hee, has drunk sex with her. Jeong-hee is confused the next morning and runs into Min-soo who happens to be home. Jeong-hee realizes the fun about sex and slowly starts to be obsessed with Min-soo. Min-soo can't turn her down and Sung-hoon finds out...
Mi-yeong, who lives in the backhouse comes between the strong friendship of Deuk-chan and Cheol-soo. Mi-yeong is usually blunt and cold, but in bed, it's a different story. Deuk-chan approaches her with love, but Cheol-soo only wants to remain sex partners with her. Meanwhile, Deuk-chan who loves Mi-yeong had an old sex partner, Hee-jin. Cheol-soo shows interest in Hee-jin. The love story of two youthful men and women begins...
Bo-ram and Hyeon-woo are friends in the neighborhood that I knew since I was young. The two, who were just like children, became adults and began to love each other. Bo-ram prefers a lighter love rather than a more serious one, and Hyun-woo likes only one woman... Hyeon-woo gets help from Bo-ram in many ways to win his favorite Seo-yeon. And as a friend, Bo-ram starts a special class for Hyeon-woo... In the midst of this, Hyeon-woo realizes that his true love is not Seo-yeon but Bo-ram, and he struggles to choose between friendship and love. This is how people in their 20s start their own unpredictable love story.
Min-seok is captivated by Na-ri's beauty when they met by chance on the street. The new house in front is noisy and as he knocks on the door, Na-ri and Yeong-hee appears from within. Min-seok drinks with these two sister neighbors. Min-seok spends the night with Yeong-hee while drinking. Na-ri beings to misunderstand these two people and Min-seok confesses his feelings to Na-ri. However, relationship between Jae-hyeon and Na-ri is not serious. Can Min-seok find love?
One day on the street, Mi-yeong greets Deuk-chan then he made a fuss, wondering if he likes Mi-yeong. Whenever he is having sex with Hee-jin, thoughts of Mi-yeong comes to him... Then one day, his friend Cheol-soo sets up a blind date. A few days later, the blind date happens and the woman who came is none other than Deuk-chan's dream, Mi-yeong. As soon as they meet, they go to the motel... Mi-yeong who is usually blunt looks so different in bed. Deuk-chan loved that Mi-yeong who finds eating harder than having sex. There's a subtle air between the two...
Minjung, the older sister who was the first love of Cheolsu. Chulsoo is drinking with Minjung who was about to get mixed. The two people who drank do the affair in Min-jung's house. After returning home, Chul-soo meets Young-hun, who was close with Min-jung. Young-hoon is dating his favorite Yuri. After seeing Chul-soo for a long time, I am excited to introduce Yuri. However, Yuri, who was not interested in Yeonghoon, feels crushed by her withdrawal. Young-hoon and Chul-soo are second. Young-hun is surprised when he talks about what happened with Min-jung while drinking. Young-hoon goes to Min-jung right away. Yeonghoon also liked Minjung in the past and has been rejected many times. After drinking, he comes to pick up Min-jung. Min-jung feels sorry for the drunk Young-hun, and teaches Young-hun the real love.
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Their neighbors, Young-hoon and Chul-soo, have their first love, Minjung. The innocent glass appears to the two men, and each other's love is mixed. As time goes by, Young-hun finds out that her real love is glass and discusses how to reconcile again. Meanwhile, Chulsoo completes his life in the city and descends to his hometown. Then, by chance, Yeonghoon and Yuri appear in the place of reconciliation, and after seeing such withdrawal, Yeonghoon is very embarrassed and asks why he came back. Cheolsu presents something to Younghoon and Cheolsoo and Yeonghoon Yuri go to Minjung's home, the first love of the two men... The story of the two men and women who cannot see one another begins again.
Jang-soo and Seong-yeon have been married for about 10 years, but they have an unspeakable secret; Jang-soo's brother, Jae-cheol. Jae-cheol used to go out with Seong-yeon before she met Jang-soo. And although Jang-soo couldn't help but marry Seong-yeon knowing her past, he himself had a young girlfriend named Eun-hye... Jae-cheol was getting along fine with Eun-hye when one day she breaks up with him. The love story between two brothers in "Big Breasted Sister-In-Law" will soon come out.
Na-yeong who has always been a friend of the innocent and friendly Hoon-i knows that he really likes the girl living in the house in front named Da-hee, and tries to connect them somehow. However, Da-hee doubts the relationship between Hoon-i and Na-yeong so he treats Hoon-i more and more coldly, and she opens her heart to her colleague, Min-soo, instead. But Min-soo who's a senior in the company only thinks of Da-hee as one of his many girls, and Na-yeong is aware of this fact. She tries to tell Hoon-i and Da-hee about this... The story of two men and women wandering between love and friendship is just beginning.
