Young-Min's finds his world turned upside down after an ex-girlfriend leaves their son with him. Fortunately, Young-Min receives support and encouragement from a sympathetic friend, Mi-soo.

Han Young Min and Min Seo Young were engaged to be married; however, Young Min's ex, Jae Hee, dumped their son, Jun, on him. Seo Young broke up with Young Min afterwards because Young Min refused to send his son back to his mother. Jo Mi Soo befriends Young Min and helps Young Min adjust to his new life with his son. Young Min and Mi Soo soon realize their feelings for each other and plan to marry. However, obstacles stand in their way before they can do so.