October 24, 2470, the year everything changed. On that day, governments around the world took the fateful decision to wipe them out: The giants.
Normal humans who mysteriously grew exponentially and uncontrollably. For centuries, humanity managed to coexist with the giants because their growth rate was controlled, with only 10% of the world's population actually becoming giants and only 1% of them becoming as big as a building. But it was only a matter of time before this coexistence came to an end.
The rate of growth became greater and greater with each generation, with cases of giants larger than skyscrapers and even cities becoming even more recurrent.
Consequently, the bigger the giants got, the more their mentality changed in relation to human beings. Before, there were very few cases of giants using their size and natural strength to intimidate or injure an ordinary human, now crimes were happening left and right involving giants causing murder, destruction and the most varied and heinous crimes against their fellow humans.
At this rate, it was clear that if no one did anything to stop the terror of these titans, not only would humanity become extinct, but the whole world and the less fortunate and truly peaceful giants would pay the price.
So, with great regret on the conscience of several politicians, the extermination plan began: Mass bombings were humanity's response to all the crimes committed by the giants who thought they were true gods, a response that was answered by increasingly violent movements. Left with no choice, humanity decided to use its greatest weapons: atomic weapons, the only ones capable of exterminating a truly colossal giant with total precision, and which for a long time had been the small humans' greatest defense mechanism.
It was obvious that the unbridled use of these weapons would cause unprecedented events on earth. Biomes obliterated, species globally extinct, innocent lives taken and lands completely uninhabited. The only reason humanity didn't succumb was because of the construction of huge underground bunkers, which even the most continental footprints couldn't sink into. Unfortunately, humanity's plan had failed, at least partially, with some giants surviving, and consequently adapting to that totally hostile planet, but acquiring some deadly weaknesses, their heels, foreheads and wrists, which had become extremely fragile compared to the rest of their sturdy and powerful bodies, giving humans little chance of defense.
230 years had passed since the great war completely destroyed planet earth, and now, at last, the humans could emerge from their bunker, with the sight of millions of ruins of buildings, civilizations and incredibly... life.