Coffee brewers Byun have always brewed the best coffee. They have tradition, craft, legacy and unchanging rules. Byun Baekhyun is the youngest heir, just handling the successful business on his own for two years, as his father, his grandfather and his great grandfather before him. But when young traveller Park Chanyeol unexpectedly appears with a fresh set of traditions and ideas about coffee to show Baekhyun, he will leave the young heir thinking whether new could be good for him.