The growing population and deteriorating environment forced humans to start thinking about their future. In this way, the plan of "terraforming Mars" was put on the agenda. People put algae and cockroaches on the surface of Mars to make it darker, so that it can absorb sunlight and increase the temperature. After that, BUGS1, carrying six astronauts, embarked on a journey to Mars for the purpose of collecting and transporting biological samples. What the six people and all mankind did not expect was that the special climate on Mars caused the cockroaches living there to mutate. They not only had human physiques, but also had extremely strong aggressiveness and combat capabilities. Almost in an instant, the six people were wiped out. Fortunately, a cockroach head sample was transmitted back to Earth, and scientists decided to call it "Martian alien" after research. To everyone's surprise, this terrible creature became the only hope to save mankind in the future.