From the cover page of the PDF:
You’re all normal people. You’re here, in this normal place, doing whatever normal thing you’re doing. If you’re at a convention, you’re at a convention. If you’re in a bar, you’re in a bar. Everyone around you is getting on with their lives – they’re perfectly normal, just like you.
Except that you weren't normal before. You were superheroes, the
saviours of Herotopia, though you don’t remember it. No one does. The whole world was changed, and the history that you used to know no longer exists, and never existed. But it’s trying to reassert itself. What happens if it does? Why did everything change in the first place?
You're the only ones with the answers.