Dual Reality

Create a world where everyone lives, unknowingly, in two realities and your protagonist accidently switches between the two.

Play with the concept of normalcy – what happens when your main character lives one life, then abruptly realizes they have been living another parallel existence too? How do these two realities differ? Which one is more real? This fantastical plot twist opens paths to exploring existential questions, the fluid nature of reality, and the validity of memory and experience.