Thousands of years ago, two alien races left their dying world and decided to come to Earth. One race wanted to take over and rule Earth's inhabitants, while the other wanted to live in coexistence and in peace with them. A civil war broke out between the alien races, and the inhabitants of Earth got caught in the middle of it. In the final battle, civilizations were destroyed, nations sank into the seas, and a setback of hundreds of years for Earth's population, technology, and evolution happened.

In today's world, the alien threat is growing once again, and they are planning their...