New age, new problems ( Future RP)

The year is 3000 and the world is suffering from many different problems like how some parts of the world is suffering through extreme natural disasters. Aliens are invading, though some are nice. To deal with the evil ones, humans were given shots and training to gain powers, was genetically altered into something that was only half human, or were turned into cyborgs. However, they only worked on teenagers because adults aren't growing anymore and kids are too young and they don't have the ability to wield it. However, teenagers are right in the middle and they don't get any problems. So we got some teenagers with the weight of the world resting on their shoulders. Sounds like it's going to be one LONG adventure.