In a world where nature is fading, in a town in south Brazil's countryside, people from the original settlements still exist, but face difficulties surviving due to the unproductive lands. Lauri is one of them. However, unlike the others, he has a dream that takes him to the Great Tower.

Red Fish tells the story of a young woman traveling with her boyfriend. The couple's relationship seems peaceful and happy, but at times, it feels like she's losing him. When he disappears one night in an empty amusement park, the girlfriend's lucidity begins to be tested. Is she dreaming? Was he kidnapped? Did a mysterious force take him? Did he abandon her? Did he ever exist?