That almost sound like an RP I read once called "Fall of Man", and the sequel, "Man of War".
It was the same concept, but it was a group of people who were Army Cadets that were chosen for a special training assignment. They thought is was all legit, but basically they have been watched since they were young. They were considered to be extraordinary specimens for testing on transhumanization; which basically is altering the make up of the human body in a manner to create a 'perfect' bio-stasis.
The memories they had of their childhoods and such were wiped clean, and they were tested beyond the break - building their pain resistance, their courage and fears...training them to kill. Then, the company that was doing all of this stuff for the military, decided to add nanotechnology to these perfect cadets... which mutated them into beings with psudo-psycho skills.
The leader of this group of cadets ended up having a breakdown - the nanos in his brain reacted differently, causing him to hallucinate and explode in temper. There was only one cadet in the group who was capable of subduing his rage, but she had to pay a major price for trying. Anywho, the hallucinations were actually predictions into the minds of the scientist who actually created the nanos. He was able to see the plans the man had for their future...which was practically a suicide attack against a warring nation, of which they were to take down the enemy - and even their own nation's military. Basically, it didn't matter who was in the way, they were to kill everyone who got in the way. The reasons for this was still unknown at the time, but the scientist was trying to take over the United Nations by using these enhanced cadets.
Well, the cadets believed their leader and investigated, finding out what had happened to them, what the military was going to use them for, and then what the scientist had planned instead. When the scientist realized they'd figured him out, he turned them against each other by using his influence on one of the members. Next thing you know, the group was split - two sides fighting against each other. Many cadets were lost, leaving the leader, the girl who's power helped his control, and two members who were helping the scientist.
Eventually, one of the bad cadets changed sides when he learned more about the scientist that scared him straight. The scientist held onto the only cadet he had left, feeding him lies about everything, including his friends. That cadet went on a rampage, totally out of control and the good cadet group had to stop him from destroying everything. While they were dealing with him, the scientist fled, but not after he alerted the press, the FBI, the Army, and whoever else he could, telling them that the good cadet group are terrorist who are trying to infiltrate Army intelligence in order to sabotage the UN talks that are preparing to begin that week.
So, not only did the group have to stop their bad cadet friend, and find the scientist before he sabotaged the UN talks and start WW IV, but they had to convince the FBI, the CIA, the Army, and everyone else who was chasing them that they were chasing the wrong people. The leader was captured a few times, interrogated, tortured, but the group always got him out. But, when the others were captured, being less powerful as he was, they were tortured worse and eventually one of them told them about their hideout.
I can't remember what happened after that, but I know they had thrown in a twist by using a Russian scientist who knew the bad scientist's plans and was trying to stop him before. The Nanos were suppose to be used for medical purposes only, but the bad scientist decided to steal the plans from the Russian and use it for evil intent. So, the Russian, with all of his technology and such, found the group and hid them at his Siberian underground lab, fixed their wounds and told them the truth about the bad scientist and all the problems he was trying to cause and why. I believe they ended up capturing him and using the nanos to kill him from the inside out. And the Russian cleared their names with the FBI and such and removed the nanos from their system.
It was a crazy story... and I really didn't mean to type all of that out, but I truly can't believe I remembered all of those stories! :D
I definitely don't want to do a large group thing though - even as a one-on-one. But, I'll hold two main charries for whatever we do, if need be. one good and one bad.