Asteroid City is a domed mining city, a city with an artificial atmosphere, a closed little world on the very outskirts of habitable space. Widespread corruption. The mafia and street gangs operate almost openly. Everyone is accustomed to permissiveness and disregard for laws with the full connivance of the governor and the police. But no one yet suspects what horror will befall the city with the appearance of a man (is it a man?) nicknamed Hyena. A seventeen-year-old cripple is deprived of everything - his family, his future and most of his body. Only one thing holds him back from immediate suicide - a withering feeling of revenge against those responsible for all his troubles. To those who remained unpunished for the atrocities committed ten years ago. To those who did nothing to ensure that the criminals were found and punished, as required by the law. The merciless avenger will stop at nothing to achieve his goal.