Sunggyu hasn’t spoken a word for nearly 7 years due to a traumatic experience. He depends on his family and his friends to get him through the days. They've all tried to break his shell, get the old Sunggyu to come back to them, but nothing they did even made a dent. But then someone new enters his life...     THERE IS A SEQUEL JUST SAYIN'!!!

Sunggyu has accepted the job offer and is traveling back to Korea. He finally found the courage to send his letters to Woohyun’s address. Unknown to him someone else gets the letters: Woohyun’s best friend Myungsoo. Latter has no idea who Sunggyu is, but he finds himself deeply touched by the letters While Sunggyu is drowning in memories of Woohyun and Myungsoo is trying to find the mysterious ex-boyfriend – will the two ever meet to connect the loose ends of two different timelines?