Eun-Ji, a typical girl you'd see on the streets of Seoul, made a terrible mistake. She fell in love with someone she knew she had no chances with. Someone she knew, if she fell in love with, would break multiple hearts, including her own. She had fallen in love with no one other than Joshua, a guy who is taken and in a loving relationship. Even worse, the girl he's dating is her best friend, who she's known for 6 years. How will this end? Will she end up with her crush? Will he reject her firmly? Or will she end up heartbroken AND lose her best friend?