Adapted from the webtoon of the same name, it tells the "hip" rebellious story of young people who gather together because of their will and vitality in an unreasonable world. In the small street of Itaewon in the miniature world, they freely pursue their own values and write entrepreneurial myths. Park Seo-joon plays Park Sae-ro, a straightforward young man who will not compromise with injustice. Because of the indelible anger, he plunges into Itaewon and begins to challenge a new dream. He will launch a refreshing counterattack against the catering giant "Jang Family". Kim Da-mi plays Zhao Yirui, who is a "highly intelligent" and uniquely charming person with a God-given mind. She is an SNS star and an online influencer with an angelic appearance and a reversed personality. She and Park Sae-ro are connected by bad fate and develop together in Itaewon. Yoo Jae-myung plays Zhang Dae-hee, the chairman of the catering giant "Jang Family". He plunged into the catering industry because of the memory of hunger in his childhood. He became a chaebol centered on him by his own efforts and is an authoritarian. Because of his son's accident, he once again confronts Park Sae-ro, a thorn in his side, and his life, as solid as an iron wall, gradually becomes shaken.