Seo-yeon likes Jin-woo, her friend since high school. She is satisfied with their current relationship where she hides her feelings and stay as a friend. Jin-woo is not greedy because he didn't have a girlfriend for a long time. Dong-hyeon, who secretly likes Seo-yeon, knows that Jin-woo and Seo-yeon like each other, but he doesn't say anything. As time went by, Dong-hyeon found out that Seo-yeon was unlikely to like him, and asked Seo-yeon to sleep with him because she will connect him to Jin-woo. The two men's mixed love between a woman is just beginning.
Two men who love one woman. Every time, Seo-yeon chooses to have a relationship between two men every time. Jin-woo and Dong-hyeon compete while waiting on Seo-yeon. She doesn't think the relationship is strange. In fact, there is a reason for making unwanted choices between the two... who will be the last man who will win Seo-yeon's love. The never-ending love story of young men and woman is just beginning.
Two men who love one woman. Every time, Seo-yeon chooses to have a relationship between two men every time. Jin-woo and Dong-hyeon compete while waiting on Seo-yeon. She doesn't think the relationship is strange. In fact, there is a reason for making unwanted choices between the two... who will be the last man who will win Seo-yeon's love. The never-ending love story of young men and woman is just beginning.
Jin-woo sees Seo-yeon and Dong-hyeon together and makes fun of the two. Annoyed with Jin-woo's jokes, Seo-yeon leaves but Dong-hyeon bit Jin-woo's words and misunderstands Seo-yeon's liking for him. Jin-woo starts teasing Dong-hyeon excitedly. Dong-hyeon who is clueless about anything is excited about his relationship with Seo-yeon.
Da-hee and Min-soo, who seem to be a good couple, eat together and take a walk. They are always seen holding hands and taking a walk, so people envies them on the street. In fact, Da-hee had a husband. A mysterious man who comes after her husband goes to work... Da-hee's love story, who walks a dizzying tight rope between two men, is just unfolding.
Jun-ho and Min-soo, experience a hard time because of Da-hee who drinks whenever she breaks up with her boyfriend, but they still take care of her. But they heard that Da-hee is meeting her ex-boyfriend again. Actually, the two guys like Da-hee. They’re trying to make sure that Da-hee won't meet her boyfriend again. The love story between the two men, which is invisible to the eye, is just about to happen.
Jun-ho and Da-hee bumped into each other on the street. The two fell in love and confides with their friend Min-soo. Knowing that the two will miss each other, Min-soo spends his last sweet moment with Da-hee, his sex partner, and arranges a place for them to meet. The hot story of Da-hee's choice between two men who think that friendship is the most important, is just beginning.
Having been happily married to Jae-hyun, Na-yeon accidentally learns about Jae-hyeon's wishes from her former sex partner Min-woo. Na-yeon, who is a little nervous after hearing Min-woo's words, confirms with Jae-hyeon and spends another night with Min-woo in anger. Min-woo, who had long been interested in Na-yeon, now begins to approach her as a real man, not as a sex partner, and she begins to open her heart little by little. The love story of two men surrounding a woman is just beginning.
Drunk Min-woo and Jae-hyeon attack Na-yeon's house. There, Jae-hyeon confirms that he likes Na-yeon. Min-woo secretly enjoys sex with Na-yeon, knowing that Jae-hyeon likes her. When she learns that he likes her, Na-yeon tries to use her heart... she is happy without knowing anything.
Newly-moved Yoo-jeong had a housewarming party. So-hyeon and Min-soo gather their friends at the housewarming party and meet for the first time. Yoo-jeong falls asleep alone, and Min-soo secretly kisses Yoo-jeong. So-hyeon, who finds out, threatens Min-soo and plays with him. Min-soo had no choice but to accept So-hyeon's terms. Yoo-jeong misunderstands them. But in the process, Yoo-jeong herself finds herself interested in Min-soo. Recognizing that, So-hyeon gives up the room he originally intended to live in to Min-soo and leaves.