Sol Ah has feelings for Jae Seon, but one day, Jae Seon disappeared without saying anything. It turns out Jae Seon has been dating a new rich girlfriend whom he recently broke up with, leaving him with the cat he gave her as a gift. Because of Jae Seon’s cat allergy, Sol Ah somehow ends up taking the cat home.

Things would’ve been detrimental if Hong Jo hadn’t been there when Sol Ah’s dad, Soo Pyung, fainted in his apartment. Sol Ah, at the hospital, finds out about Soo Pyung’s illness and also meets his fiancée for the first time. Now that Sol Ah has to move into a new house to live alone, she feels somewhat reassured that Hong Jo is by her side although she still hates cats.

Sol Ah moves to a new place on her own. It’ll be her first time living alone and she’s feeling mixed emotions about it. With high hopes, she arrives at her new house and is surprised. She’ll be neighbors with Jae Seon, her first love and crush.

Sol Ah starts drawing webtoons again at her new place. Hong Jo continues to orbit around Sol Ah living a double life. One day, Hong Jo accidentally saves Sol Ah and becomes her life-saver. Things seem to be settling down, but there's something fishy about the new house. Is there someone else living with Sol Ah and Hong Jo?

Sol Ah tries to move on from Jae Seon and goes on a blind date. At the meeting spot, she finds Guk Bong and realizes that Doo Sik set her up with Guk Bong. The two enjoy the afternoon anyway and come back home with fun memories. However, Jae Seon breaks the news to Sol Ah. He found someone who will take Hong Jo.

Hong Jo tells Sol Ah that Hong Jo likes her. Hong Jo finds out that there was a misunderstanding between Sol Ah and Jae Seon because of him. Guk Bong comes back to his house. Sol Ah thinks Hong Jo has a girlfriend and she wants him to tell her about it. Meanwhile, Hong Jo leaves Sol Ah’s house.

Sol Ah thinks Hong Jo is dating Ji Eun. Jae Seon realizes that he misunderstood Sol Ah and apologizes to her, but Sol Ah doesn’t accept his apology. Sol Ah and Ji Eun become friends and have a drink together. Sol Ah encounters Guk Bong, but she still thinks Hong Jo is Guk Bong.

Ji Eun and Sol Ah become friends and Sol Ah gets to know Ji Eun’s true feelings about Doo Sik. Doo Sik who is oblivious about Ji Eun’s interest in him and thinks she’s the only one who hates him at work. It provokes him and he tries to persuade Ji Eun to like him.