Choi Siwon is a homicide detective who became dad at the early age of 17. He was deeply in love with his girlfriend but she died the day she gave birth to his daughter Sully. Her death destroyed his life. Since then his life has been misery. He doesn´t smile and his eyes always reflect sadness and pain. He tried to go on just for his daughter but it has been really hard. He never loved again. He couldn´t. He was not ready to love again. Or at least that is what he thought till one day his daughter, who is in her first year of College now, brings her best friend Kyuhyun at home to spend some days with the family.

Kyuhyun is a cute boy of 20 years old who became Sully´s best friend. He fell deeply in love with Siwon the day his best friend showed him a picture of her dad. Since then he felt captivated by the handsome man with melancholic eyes. He felt the urge to make him smile and erase that melancholic expression. The handsome man became his platonic love for months. He even stole the picture from Sully and kept it in his own wallet, sighing and staring at the man´s picture all the time. Now his best friend has invited him to spend some days with her at her home. This is the chance he was looking for to meet the man who appears in his dreams every night. But this will not be that easy, Kyuhyun doesn´t want to lose Sully´s friendship because he couldn´t help but falling deeply with her dad. Will Kyuhyun make Siwon smile again and love him back? Were they destined to be together?