Sang Won is an idealistic journalist who is assigned to investigate an incident that initially seems like an urban legend: the existence of a man who turned into a fish after participating in medical experiments. Eventually she discovers the creature, named Park Gu, and learns his story.
The aforementioned was an actor who agreed at one point to participate in a clinical test from a pharmaceutical company, due to the money promised him. However, the experiment’s results were disastrous, since his upper body became that of a fish.
After the discovery, Sang Won submits a video with Park Gu to her channel, and upon its broadcast, a chain reaction is initiated throughout the country, with a number of individuals wanting to exploit the creature for their own benefits, others blaming the company for its practices, and others supporting it due to the results. Nevertheless, the only thing Park Gu wants is to return to his former self, although nobody seems keen to let him do that.
Kwon Oh Kwang directed a black comedy that is actually an allegory regarding popular culture and the way it functions within society. The film is well paced and quite entertaining; however, its script suffers at points and the answers to the critical questions presented are never adequately revealed.