Two men, Dae Young and Jung ha meet their female friend Min ji at a restaurant. She scolds them for keeping her waiting and the three begin chatting about their lives. Suddenly, Min ji asks the two men why they never dated anyone and Jae reveals he hasn’t even kissed anyone yet leading Dae Young to tease him and jokingly teach him how to kiss except he ends up bumping their heads together.
Min ji leaves them to go to the bathroom. That’s when Dae Young becomes serious and asks Jung ha if he really doesn’t remember. Jung is clueless of what he is talking about so Dae Young refreshes his memory, reminding him that after their high school reunion, while he was putting Jae to bed, the latter had suddenly pleaded with him to kiss him. The two had kissed and now Jung ha remembers and asks Dae Young why he is suddenly brought it up. Dae Young confesses his feelings for Jung ha but gets rejected by him because he doesn’t want to complicate their relationship if they end up dating and breaking up.
Heartbroken, Dae Young leaves but is surprisingly met by Min ji who suddenly asks to date him.
In episode two, Jung ha is unable to hide his shock when his two best friends meets him at a restaurant and announce that they are dating. Dae Young even does pda with Min ji in front of him and he isn’t happy. Later, when Dae Young leaves for a brief moment, Min ji apologises for their relationship but Jung ha tells her not to apologise becuse he already knew she had always liked Dae Young. However, Min ji tells him she knows Dae Young doesn’t see her as a woman but she will try her best to win his heart with Jung ha’s support. Dae Young returns and asks Jung ha to hang out with them at his place but Jung ha declines pretending that he has a lot to do.
At Dae Young’s place, Min ji tells him she is happy of the pda he showcased while they were with Jung ha. The two start kissing and Min ji reveals that she has never had sex before and would want her first time to be with Dae Young. But all the while, Dae Young can’t take his mind off Jung ha. To Min ji’s surprise, when Jung ha suddenly calls, he leaves Min ji to go see him.
Jung ha only just had a minor cut and Dae Young bandages him up. Jung ha then tells him to go back to Min ji. As he is leaving, Jung ha warns Dae Young to not hurt Min ji in order not to affect their friendship. Dae Young angrily retorts that Jung ha is the one afraid of getting hurt.
Later, Min ji meets Jung ha to introduce a girl to him so he wouldn’t be left out since she’s now dating Dae Young. Jung ha is surprised at this and asks if she’s okay after noticing her sad mood. Min ji replies that she still can’t get into Dae Young’s heart but she will still try her best and ensure their friendship doesn’t break
That night, Jung ha heads to Dae Young’s place ready to asks him a pressing question but is shocked when Dae Young starts taking his clothes off and leaning towards him. Startled, he smacks him on the head with a book. However, Dae Young only wanted him to apply pain relief patch on his body. Jung ha apologises and after placing the patch on Dae Young, Dae Young asks what he had wanted to tell him before but Jung ha declines to talk about it, making Dae Young frustrated at him for always making decisions for everyone.
Jung ha gets mad when Dae Young asks him to stay over hinting his confusion at Dae Young’s behavior for suddenly confessing to him and then soon after, dating Min ji. He asks if he even likes Min ji and Dae Young asks him back if that was what he had wanted to ask him, to know if he likes him or Min ji. Jung ha is flustered and Dae Young threatens to kiss him if he doesn’t respond. Jung ha stutters and Dae Young kisses him fiercely. He responds, both lost in each other, unaware of Min ji calling Dae Young’s phone.
In episode four, Jung ha wakes up to find Dae Young watching him. He remarks on how cute he is while sleeping. As he leaves to prepare them a meal, Jung ha is bothered by Min ji. She’s calling Dae Young’s phone so he picks up and she complains to him that Dae Young hasn’t been answering her calls since yesterday. She’s afraid he will break up with her. Jung ha is shocked when she reveals she’s in front of Dae Young’s house. Min ji enters and is shocked to see him there. Jung ha lies that the two of them went drinking. That’s why they didn’t hear her calls. Min ji is suspicious over why he would pretend he wasn’t with Dae Young since last night.
Dae Young appears and reveals the truth. That him and Jung ha are in a relationship. He tells her how everything all started. Min ji is hurt and feels used by the two of them. She tells them that their ten year relationship have all turned to trash and that she will never forgive them. She leaves angrily.
Later that day, Jung ha reminisces with Dae Young about how the three of them first met when they helped him get his money that a machine had swallowed up. Ever since then, they were a source of strength to him. Dae young asks if he regrets their relationship. Jung ha replies Dae young would feel sad if he does. The two then kiss.
