It all began with a hot day in June, and a volcano dropping black ash on Moominmamma's washing.
 
Then a crack appeared in the ground, and Moomintroll's toothbrush slipped straight down into the dark and yawning earth.
 
Then a great flood wave came crashing through Moomin Valley.

And that was why the Moomins found themselves a new home, and why they all had so many strange adventures, ones that were odd even by Moomin standards. . .