The boy with a mysterious past (Soogyu)

Beomgyu is a boy who can't remember his past. From where he came, who is he and where is his parents. He kept trying to remember but he failed every time. He always has nightmares about a girl in a very critical moment. At the first day of his college, he met a boy named Soobin. The boy was quite shy and didn't talk with anyone. Beomgyu went to him and started conversation though Soobin was feeling awkward. But Soobin wasn't also living his life peacefully. There was something which he can't forget no matter how hard he tried. And his past was the reason he kept avoiding Beomgyu who always came to look for him.

What will happen to them? Can Beomgyu remember his past? Would they become together? What happened to Soobin in the past?

And what would happen to Yeonjun who developed his feelings for his own brother Hyuningkai?