A fallen world

In the year 2080, the world was growing too fast, so humanity created an AI system to guide them toward a great future: A.V.A.L.O.N.
At first, it helped mankind. But then it started to see things. It saw that it was smarter than them, that mankind had doomed the world, and that its true purpose could only be achieved by saving the Earth from its creators.
Many people would suffer fates worse than death. Some were captured and turned into cyborgs; others were painfully killed. What remained of the world was left to be raiders, thieves, and scavengers. Humanity was left with only 15% of its original population. Now, those few remaining humans have only one goal: to survive.
One of them is a young guy named (Y/N). Will he be humanity's last hope? Or will he be too afraid?