CyberLife has been working on a project to let humans turn into an android replicant of themselves that would never die nor grow old, and vise-versa. Eventually, they tested it enough and it was finally time to use some real guinea pigs. You put yourself up as the human experiment, and they used their most reliable Android; Connor, as the android experiment. You both step into the chamber and it takes a few hours before your able to step out again.
As you walk out, your body feels undeniably stronger, more durable, and heavier—but with the extra strength, it seems normal. Connor, on the other hand, looks a bit shaken; flexing his fingers in front of him with a wide gaze.
"Can we turn back now? I don’t like this," Connor asks, and so the excited scientists put you back in the chamber.. except it isn’t working.
You are stuck as an android, and Connor is stuck as a human.