Black Fox or Cat Thingy

I had a dream last night that this old man disguised as a black fox or cat thing led 4 children every few years to this strange world where the whole ground was covered in ice like an ice rink or frozen lake, and the only way to get there was by going on an adventure (all I can remember is that you have to slowly get into a half-filled swimming pool). The last part was that you had to get in a port-a-potty that fills up with water. Once your inside and its fills up completely, you get sent to that frozen world. You are not allowed to go back to the real world or have any conact with it, and the only thing you can observe from the real world is your bedroom through a museum exhibit model of it.

Strange... and did I ever tell you about the time I had a dream that a Life After People appocalypse happened when I was visiting Jurassic Park, and then my History teacher stole my laptop while my car disintegrated into rust?