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.
Kang Ha-neul
Chun Woo-hee
Kang So-ra
Lee Sul
Lim Ju-hwan
Score: 5.6
Score: 7.4
Score: 5.4
Score: 5.9
Score: 6.8
Score: 7.9
Score: 5.2
Score: 6.3
