The Three Frozen Eras

At the end of the 21st century, a global nuclear war breaks out. Humanity of the 21st century, along with its modern civilization, is frozen for 100 million years. Fifty million years later, humans appear on Earth once more. Known as the Second Generation, they advance to the age of firearms, but overexploit the planet, triggering a global freeze that leaves them frozen for another 50 million years. Another 50 million years pass, and a Third Generation of humans emerges. They have only just reached the height of feudal society. While harvesting ice at the South and North Poles, members of the Third Generation uncover the 21st-century humans frozen for 100 million years, along with the people of the firearms era frozen for 50 million years. Three kinds of humans, three different ways of thinking: who will become the master of Earth? A fierce struggle breaks out between them…