Mysterious pictures of stars with tails have been popping up all over Moominvalley and nobody knows what they mean until Muskrat tells Moomintroll they are signs that a comet will appear in the nighttime sky. Moomintroll and his friend Sniff journey to the Observatory to see what they can learn. They hear the alarming news that the comet is headed straight for Moominvalley! With the help of new friends, Moomintroll and Sniff start for home, hoping...

"The Moomins and the Great Flood was the original Moomin story, published in Finland in 1945. A rediscovered gem, it offers an extraordinary glimpse into Tove Jansson's unique vision, featuring beautiful sepia watercolours as well as the pen and ink drawings that would become her trademark." ... From cover.

Lonely and frightened Toffle remains unnoticed and alone in the world until he finds a frightened girl who needs comforting.