Untraceable

Cassie has been training for her entire life. She was hidden deep in the forest and has never seen the real world. Cassie is a smart girl who has been taught by her mom her entire life. Today is her only chance to prove to her dad that she can make it. She has one week to complete the mission. She has one week to kill the person she finds most interesting.
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My parents were very wary of the government and people in general. Turns out that they were pretty popular back in their day. But, times have changed. There was a decline of our population from over 300 million in the US, it declined into 7. There are 7 million people in the United States of America. A war passed and diseases spread. Now everyone is being tracked by the government, there are chips in the back of their head.
Now that you know everything I do, here is the twist. I don't have a chip in the back of my head, neither do my parents. Seventeen years ago my parents faked their death when they found out they were expecting. Once they were clear, they went deep into the forest. I guess my parent knew a few people and they had built a hidden mansion in the forest.
In my 16 years of life, I have been training. I don't know what I have been training for but I know its something big. I was told everything yesterday, my whole life changed. Today I'm going into the real world.