Fly a Fighter Plane to Prevent a World War

In 2400, a world war broke out and the population dropped sharply. In the year 3000, the world's population dropped sharply, the food chain was lacking, and some animals and plants multiplied in large numbers. There are wolves, tigers and leopards everywhere, and humans are facing the crisis of extinction. Dr. Qian asked me to ride in a time machine to prevent a world war.