Park Choi-go quits from his office table job to open a chicken restaurant in a middle-income neighborhood of Seoul. Renting a plot of land where a sauna stands from the landlord, Seo Myung-dong, he has to face Myung-dong's temperamental granddaughter and the sauna's owner, Bo-ah. For the past five years, Bo-ah, a failing webtoon artist, has been holing up in the sauna after a conflict with a popular webtoon artist over ownership rights led to her being shunned from the community. Myung-dong asks Choi-go to admit Bo-ah as a part-timer in his restaurant in exchange for a lower rent fee, hoping that she can regain her spirit.
Bo-ah is hostile at Choi-go for disturbing her peace and regards him as simply a rich bourgeoisie who wanted to experience the life of a commoner. Helped by her childhood friends: Hwang Min-ah, Oh Yeong-ho, and Kim Kyu-man, they try to sabotage the joint through various means, such as handing out scathing flyers, which backfires when it turns viral and therefore garners attention. However, Choi-go's seriousness at his job and unfailing kindness to Bo-ah cause her to begin questioning her first impression. Since Choi-go never studied cooking, the restaurant operates at a loss until he hires Andrew Kang, a bum with a tremor who used to work at a three-star Michelin restaurant.
Around the time when Bo-ah softens and falls in love with Choi-go, two adversaries come into the scene. The first is Choi-go's ex-girlfriend, Moon So-dam, who works at a food TV program and wants to reconnect with Choi-go by doing a free publicity of the joint. During the broadcast, Min-ah, Yeong-ho, and Kyu-man successfully do a sabotage, causing its suspension for two months. So-dam becomes suspicious of Bo-ah, who did not participate in the plan, tries to warn Choi-go, who refuses to believe her, and attempts to catch the trio off-guard when they try another sabotage. However, Andrew bails them at the last minute and makes them promise not to do it again. The second adversary is Choi-go's domineering mother, So Oh-sook, who is angry at him for quitting his previous job and attempts to reduce his chance of winning big by opening a chicken joint down the street after tricking Bo-ah into giving her his recipe.
Feeling guilty, Bo-ah admits her previous actions to Choi-go and considers resigning. While upset, Choi-go comes to realize that he has grown to love her and confesses, begging her to stay. Min-ah, Yeong-ho, and Kyu-man are initially livid at Bo-ah for not telling them to stop harassing Choi-go sooner, but quickly make amends when a tragedy strikes her: the death of Myung-dong. During the funeral, Bo-ah's deadbeat father, Gong-cheol suddenly appears to take his legal inheritance, despite the fact that his father had left all his possessions to Bo-ah, and redevelop the neighborhood, which would raze the chicken joint to the ground. Assisted by her friends, Bo-ah manages to convince the neighborhood not to sell their land.
Several months later, Choi-go's chicken joint is growing popular. Oh-sook chooses to stop bothering Choi-go and sell her joint. So-dam has moved on and is dating Choi-go's brother, Joon-hyuk, with whom she grew closer while investigating Bo-ah and her friends. Thinking that he has nothing more to offer to Choi-go, Andrew resigns and opens a restaurant nearby. Bo-ah, meanwhile, finally decides to draw webtoon again, having made a promise to Myung-dong to live her life to the fullest.