"You Smile" tells a story that starts with the wealth gained from a self-made father, but after bankruptcy, the family has to live in the home of their driver. "You Smile" is a family TV drama that promises humor, laughter, and warm comfort. In the show, Lee Gwi-han plays Lee Han-se, a man engaged to wealthy woman Seo Jung-in (Lee Min-jung), but due to Jung-in's family bankruptcy, he faces parental opposition to the engagement. Because of his indecisive personality, they break up, yet he can't forget her and constantly interferes in Seo Jung-in's new relationship. Lee Han-se is a greedy and jealous person, but he has pure feelings for Seo Jung-in.