Eighteen years ago, Kim Joonmyun found out she was pregnant by her boyfriend but she was too scared to tell him. So she started avoiding him, but when Yifan confronted her, she refused to tell him the truth because she didn't want to ruin his future. Thinking that she didn't want him anymore, Yifan ended things and moved back to Canada. He left Korea without knowing that Jooonmyun was pregnant with his child. Ei