Lee Hyukjae, a normal student of SM University. He is an intelligent student but he is not the most brilliant. Before, he has his normal life, like other people, he hang out, he laugh, he sing and dance. Yeah… he dances. But after that accident, he changed….no….he not changed but his life. His life become too plain…..too plain. He forgot how to laugh and smile, actually not that he forgot, but he just can’t do it sincerely, he also stops dancing and go out with people.

Every day he will forcedly wake up from his beloved bed and doing all the routine, he will wait at the station to take train or sometimes bus. Everyday doing the same thing again and again, he bored. There’s really nothing new for him. His friends did ask him to go out but still, he refuse. Why? Because for him, it won’t change anything. He still can’t leave the past. But inside, he wants something new….sometimes he feel he in dilemma. Wanting something new, but he won’t change.

But

What happened when someday he saw someone, was staring at him thru the window. The building separates them and they only communicated by writing. Will his life change, or not ?