Single dog Lucky breaks free from The Trap - a house for stray dogs as a terrible earthquake begins. In a destroyed and depopulated city, he meets former domestic dogs left by their owners to die without food and shelter. The lucky one tries to awaken their instinct - the Dog Spirit, teaching them to survive in a world without people: to find food and shelter, to fight enemies and predators, but, above all, to forget about devotion to their Long-legged and flee from a dangerous city.