Ever since they were young, Cha Inwoo had a quiet crush on his next-door neighbor, Kwak Hajun. But Hajun was completely different from Inwoo. He was popular, outgoing, and part of a completely different world. The only connection between them was being neighbors. That was it. With the college entrance exams approaching, Inwoo believed their already distant connection would naturally fade away once they started their separate lives in college. But on exam day, a piercing scream shattered the stillness of the school hallway…