The story is about two childhood friends, Joon-suh and Eun-suh, who grew up together but were forced to part ways when Eun-suh's family moved away. Many years later, they meet again by chance and rekindle their friendship.

A heartbreaking tale of two people who are separated after they discover that they are not brother and sister, but their love grows during their separation. After 10 years they are reunited, but then different circumstances keep them apart.