Sony Pictures Entertainment Korea

Young-ho doesn't have any dreams for his life. He has been studying for three years to enter a university. He decides to send a letter to his childhood friend So-yeon. But her younger sister So-hee receives the letter instead of her sick sister. So-hee writes back to Young-ho, pretending to be So-yeon. Meanwhile, So-hee takes care of her sick sister and also runs a secondhand bookstore with her mother.

A lawyer tries to prove her mother's innocence and uncover the secrets of a small village with the help of the local mayor. Her mother was accused of murder after the rice wine was poisoned at her husband's funeral, but she is suffering from memory loss and cannot defend herself.