Here’s something for you to use to grow a new story!
You are in a terrible accident. Your injuries are severe and beyond the capabilities of regular medical technology to heal. Time is limited to decide how to save you and someone must make a choice. A deal is struck and paperwork is signed by your proxy.
You wake up in a very different body, more machine now than flesh. You are part of an experimental cybernetics program and you have a lot to learn about your new situation.