When Kim Jinae helps her best friend — Sehun — court his crush, she didn't expect things would backfire her.  

In which, the famous Park Jihyun is hired to photograph Oh Sehun. It's as simple as that, except that they are arch nemesis, and they are both hot, and they have a past and not to mention, they are both going to witness something that will make their life a total roller coaster.