Eight years ago when Yang Ming had to unexpectedly quit his career as an ice hockey player, he encountered a child, Soo-ho, who fainted on the street. Soo-ho had been living only with his childish mom, Eun-joo, without any father figure. While they were looking for a babysitter, Soo-ho chose Yang Ming as his caregiver for his heartwarming and trustful personality.
Although Soo-ho and Yang Ming got along with each other verywell, Eun-joo tried to keep distance from Yang Ming because he was a stranger, a man, and a foreigner. However, she soon became drawn to his warm and gentle personality. Soo-ho and Yang Ming became closer and closer. One day a totally unexpected incident happens to the three of them: Soo-ho, terminally ill, his mom, who has been living in despair and sadness, and the stranger, Yang Ming. When they find out about the unexpected turn of events, they are taken aback.