Lee Se-na (Jang Nara) is a child raised in a wealthy family and pampered by her protective parents. She has never been hurt and naively believes that love can overcome all obstacles. Although she has a big heart, she is selfish, not trusting, and cares mostly only about her own feelings. One day, she meets Han Seung-woo (Ryu Shi-won) through an arranged date and instantly falls in love with him. Seung-woo is from a poor family and likes a simple and frugal life. Although he is very honest and righteous, he has difficulty sensing other people's feelings and expressing his own. After a short period of time, Se-na and Seung-woo decide to get married, before they have truly gotten to know one another. We also meet Shin Yoon-su (Myung Se Bin) and Suh Jin-hui (Lee Hyun Woo), both childhood friends of Seung-woo and each with their strengths, shortcomings, and past relationships with the main duo.