The Triangle Fish returns... to save the seabed and thwart the plans of Ares, who destroys him to create an underwater circus. The Triangle Fish returns... to show everyone that real life is not what screens show, but what we live. The Triangle Fish returns... to free the fish from the slavery of the theme park being built in his name, without his approval. The Triangle Fish returns... to become, for a while, with the help of the ecologist Betty and her magical pearl, a n t h r o p o s, in order to confront Ares.

The Triangle Fish returns to tell everyone: "I am not a hero, I am an anti-hero. I am not the star of the channels, I am just a little fish swimming in children's books...".