Crime reporter from the press center of the Main Directorate of Internal Affairs of the Moscow Region, Ekaterina Petrovskaia, arrives in the suburban science town of EREB. In Greek mythology, Erebus is the Eternal Darkness—the son of Chaos and Darkness. So why be surprised that a series of monstrous crimes occurs in the town: women are brutally murdered, and their bodies are dressed in carnival costumes made of flies. Katya joins a complex and dangerous investigation. It is led by the head of the local precinct, whose surname—strangely enough—turns out to be Alla Mukhina. And on her very first day, Katya meets the charismatic ex-cosmonaut Konstantin Cheglakov, who paints terrifying scenes of outer space. It is in his house that Katya encounters the first mystery left by Erebus, generous with secrets…