Mizuno Gota, an aspiring musician, finds himself in a quandary when the convenience store where he works part-time suddenly closes down. One day, he catches sight of a newly-opened hamburger shop called Yankee Burger. When Mizuno enters, he is asked by the owner Ozeki Katsuya for feedback on the taste. He condescendingly tells Ozeki that the burger lacks punch, and the next thing he knows, he is offered a full-time job at the shop. Thinking that he can put his mother at ease and at the same time be able to drive a Ferrari some day if he stops living as a part-time worker and joins the hamburger shop, Mizuno decides to take the company entrance exam.