On the first day of attending his new high school, Park Sae Ro Yi punches his classmate Jang Geun Won, who was bullying another classmate. The bully is the son of CEO Jang Dae Hee. The bully's father runs restaurant business Jagga where Sae Ro Yi's own father works. CEO Jang Dae Hee demands to Sae Ro Yi that he apologizes to his son, but Sae Ro Yi refuses. Because of his refusal, he gets expelled from school and his father gets fired from his job. Soon, an accident takes place. Sae Ro Yi's father dies in a motorcycle accident caused by his ex-classmate Jang Geun Won. Burning with anger, Sae Ro Yi viciously beats Jang Geun Won. He is soon arrested and receives prison time for violent assault. Sae Ro Yi decides to destroy the Jagga company and take revenge upon CEO Jang Dae Hee and his son Jang Geun Won. Once Sae Ro Yi is released from prison, he opens a restaurant in Itaewon, Seoul. Jo Yi Seo, who is popular on social media, joins Sae Ro Yi's restaurant and works there as a manager.