Lisa and Daiya were just two kids whose parents were friends. After a horrible and tragic accident, Daiya's parents died and his grandfather became the responsible to raise him as good as possible. Due to the fact that he didn't have parents, he had a difficult time with some bullies, but Lisa was always there to stand out for him. That's how they became best friends. "One day I'll be the one protecting you" Daiya always answered like that. But he never had the chance to do it since she left to study abroad. During that time, Daiya's grandfather decided to transfer the old restaurant to his grandson because he retired, but there's a problem: Daiya has no idea about how to manage it. And what is worse, not too far away, there's a new fancy restaurant with the golden young chef, Park Chaeyoung, or how everyone calls her, Rosé. How will Daiya make it to transform the old restaurant into a successful business? Will he be able to face the extreme rivalry? And, what will happen when those two girls become part of his family life?