Joo Hyoeun is a psychologist in training. Despite being only twenty years of age, this youthful genuis eagerly pounces on any psychological-related opportunies. That... would probably best explain Hyoeun happily accepting her best friend's outrageous proposal; she was to confront her best friend's boyfriend about his dangerous obsession with luxurious and extremely expensive Gucci and Prada products. It seemed quite ridiculous at first, but Hyoeun was well aware that peculiar hobbies and or actions often required a very well hidden meaning behind them.

As news traveled around Seoul National University, ten other girls suggested their boyfriends to join the little confrontational meet up as well. In no time a rather large intervention consisting of twelve random strangers was formed. Six months was the given time frame. Insecurities, secrets  betrayal, love, lies, pain. The honest truth pills out. 

Come join the journey of Hyoeun as she attempts to break down the high walls of twelve boys with seemingly different personalities and issues. Will she successfuly help the group of troubled boys she calls Exo and safely overcome their thick barriers... or will Hyoeun realize the particular idea of an intervention is too much to handle?