As I am no longer able to do the original plot, I am currently working on a new one.
An early idea that I have already decided I cannot do is playing a video game, then going to sleep because I feel ill, then waking up in the video game. I was originally going to use Five Nights at Freddy's, but as that requires more than one person (someone needs to be the security guard, someone else needs to be the animatronics), I am unable to do this particular game. I was also going to do guitar hero but as that game uses licensed tracks for the most part, I am unable to do that too.
Another way I thought to do this was to make my own video game using RPG maker VX and have myself end up in that game instead, but creating a game, even a short one which consists of only a couple areas and minimal dialogue, is somewhat difficult.
My current idea for the new plot is that the main character is writing a story, in which the main character of the story dies at the end. The author feels ill afterwards and goes to bed to see if they feel better. They then wake up inside the story they wrote as the main character and realise that they need to change the events otherwise they will die at the end.
The story will obviously be a horror one, and I likely will write the story that the opening is based around as a short story to help me further with the planning, which I will post a link to when it is done.
The short story is about the main character being chased by their doppelganger. I may have the intro recorded in first person, therefore I can be visible as the doppelganger, and someone else can be acting as me behind the camera.