Note: I used to love those books as a kid, they were my total fave and I would write some of my own. So this is my own version here. But obviously, feel free to take this in whatever direction you like...
You wake up. Nothing unusual about that, six billion people on Earth do it every single day. Except, with those swirling loops of light above your head, you can't entirely be sure you're on Earth.
"Help" comes a faint cry. From this distance (given you're still barely awake you can't be sure what distance this is), it's hard to tell if it's a man, woman or a very clever dog.
As you get up, you notice the floor smells of fudge. That's because it is fudge, you realise. You look around. Sure enough, you are surrounded by fudge demons. What do you do? What do you do?