Sanghyuk has met some guy named Hyeonwoo online. That began as an awkward chat, soon turned into a great friendship. The two of them chat day and night and Sanghyuk might had gotten feelings for his online friend, even though he hasn't seen Hyeonwoo's face our heard his voice once. His  friends kept  telling him the chance is pretty big that Hyeonwoo is  a catfish, yet Sanghyuk doesn't give up on him and continue with it. Will he ever meet the person he has been chatting with for so long? Or were his friends right and is Hyeonwoo indeed a catfish?