Atrofil the key — is a game that wants you to survive in a world affected by a terrible catastrophe. A terrible thing happened, a meteorite falls on the Earth, with it a terrible virus enters the planet. This strange ailment can turn people into scary creatures. In the center of the story is the girl Sonia. She is forced to flee from an extraterrestrial disease caused by humans. When you try to leave the city, she has an accident.