The boys had run into a strange girl outside of a Hong Kong freeway right after their concert. No one knew where she came from and no one could figure out what exactly happened. Chanyeol was the one who saw everything, yet, he understands none of it. And Baekhyun is the only one she seems to be comfortable with. Everything about her is clouded in a fog of mystery that seems impenetrable. As the boys spend more time with her, they unravel more secrets that have been weighing down on the girl's shoulders.