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Ji Jae and Gyu Tae are next door neighbours and are frequently crossing paths with each other. After several promised drinks, they finally meet up for an awkward drink until they meet Min Ah, which is personally connected to both of them. (Source: TVMAZE)

When Ji Jae falls down in his bathroom, he requests Gyu Tae to call 911. Gyu Tae, however, is stuck in his own bathroom as his door won't be opening. (Source: TVMAZE)

Ji Jae is playing games all day and all night with very loud music, which annoys Gyu Tae. Gyu Tae is out for his revenge and makes some noise too until something starts to burn... (Source: TVMAZE)

Min Ah visits Ji Jae to bring a book, but Ji Jae totally forgot to tell her that he has someone living with him for a while. (Source: TVMAZE)

Gyu Tae is taking many showers during the day which starts to irritate Ji Jae, which himself forces Gyu Tae to shorten his shower time by simply showering with him. (Source: TVMAZE)

Gyu Tae and Ji Jae are going out for dinner with Min Ah, which starts to suspect them to date together while getting drunk.

Min Ah asks Hee Jung for advise to impress her date. However she crosses path with Ji Jae and Gyu Tae at the movies, which are about to do the unthinkable thing both for their reasons. (Source: TVMAZE)

When Min Ah's date is joining with them for some food, he asks Gyu Tae for some advice, however, this turns out to be disastrous for both Ji Jae and Gyu Tae. (Source: TVMAZE)

When Min Ah's ex-date is overly in love with his new boyfriend, Ji Jae and Gyu Tae are doing their best to avoid Min Ah from seeing them which causes Min Ah to beat them several times. (Source: TVMAZE)

Ji Jae and Gyu Tae are bored during their dinner when Min Ah arrives. When they ask her to save them, they end up on a table with young students. (Source: TVMAZE)

Gyu Tae is a bit sick, but when Min Ah's telling him she'll come by, he prepares to do his best to impress her until he becomes aware of her past relationship with Ji Jae. (Source: TVMAZE)

To repay Min Ah for bringing porridge to him, Gyu Tae brings her a self-made meal too, only to bump in someone he would not expect to be there. (Source: TVMAZE)

After several days, Gyu Tae returns back to Ji Jae's home only to find it in a very dirty condition. In order to get his revanche, Gyu Tae will live as dirty as he does while hoping that Ji Jae comes to his senses. (Source: TVMAZE)

Gyu Tae is finally able to move back to his own room, however, it is hard for both him and Ji Jae to get used to it. (Source: TVMAZE)

Ji Jae and Gyu Tae are having a bad time since Gyu Tae moved out and Min Ah is inbetween them, until a tragic event brings them together once again. (Source: TVMAZE)