Genuine love between a full-hearted man and a tomboy princess, a touching story about a humorous and warm love. Cha Tae Woong is a car salesman. He is optimistic, candid and has strong conviction. He can endure a disadvantage but not injustice. He has strong will and bravery to face things head on and not compromise justice. He also has his own principle in sales and sticks to it at all costs. This inflicts loss many times, but he believes that momentary gain is less important than his conviction. Seong Yeon Ho is a pediatrician. She's an only child of an affluent family and is the hope of the family. With sophisticated looks, she is a self-centered person but also bright. She is an arrogant girl who refuses to be meddled with and does whatever she wants. However, because of forgetfulness and a restless personality, she's a cute and warm-hearted girl who is truthful. This is the story of a man, who has nothing to show except for siblings and true courage, and a woman, who has never experienced failure and who has only cared for herself inside a plentiful enclosure, who find the true meaning of life and who become mature through the process of meeting and falling in love.