Meet Pete. Pete is a confused, burnt-out, middle-aged man caught in a downward spiral beyond any medical, psychological or moral help. You know that moment when you have so much on your mind you just decide to take a nap? Well that’s Pete’s very existence. His general attitude in life: if it requires wearing pants, it’s not worth bothering. Even his (former) friends tend to avoid him, and he doesn't blame them.
His ultimate opportunity to be reaccepted lies with his ingenious great-uncle who goes by the name of Doc. He has invented a nano-bot which can clone white blood cells - the army of the human body - that can destroy all filth floating around in Pete’s body.
It is your job to use this cloner and aid Pete on a microscopic level.
Because nobody else want to do it.