It is love at first sight for Hyung-joon, a certified public accountant, when he sees Si-jeong, a flight attendant. Despite their feelings for one another, Si-jeong ends up marrying Hyung-joon's friend Tae-seob. Hyung-joon, in turn marries, his first love Eun-ah. But when he hears about Tae-seob and Si-jeong's divorce he is thrown into a state of emotional conflict. Before Hyung-joon can rekindle their romance, Si-jeong marries a baseball player named Kang-hyuk. After numerous failed attempts at finding true love, Hyung-joon realizes the true meaning of love.