Brainstorm

"'Join... us...' they say. 'Join... us...'"

     I am a scientist and I can save patients, using small robots. One day, I have to have a operation of a man who has brain cancer. After the important operation, it seems to succeed, but there are something wrong with the man. Surprisingly, his eyes are lifeless. In fact, the robots are getting uncontrollable in his brain. I try to control them, but it doesn't work. At last, they...
    Could I save him from not only the cancer but also the powerful robots?
   This story is for current world. Technology is developing now, so this story can comes true in the future. I am scared to think so. It has some disadvantages. We have to use it carefully.