They go for a walk, and in a beautiful valley, find that the blue Moominhouse has been washed up by the flood and landed there. They rescue him and go to dry land, however, Moominpappa is very upset that he has lost Moominhouse, which he just built for the family, as it has drifted away in the flood. They find a message of help in a bottle from Moominpappa, and with the help of a stork, find Moominpappa stuck up a tree. They soon find that a flood has begun, and they rescue a cat and her kittens before using a chair as a boat to search for Moominpappa. Moominmamma, Moomintroll and the small creature rush off to search, while Tulippa stays to live with the red haired boy. The group goes in search for Moominpappa and find a lighthouse lived in by a red haired boy.

They reach land, and the hattifatteners and sea troll depart. The boat does not appear to be going in any particular direction, so the group invite a sea-troll to come aboard and steer the ship. They then find the hattifatteners and get onto one of their boats with them. Moominmamma is attacked by an antlion, but is rescued by the others. However when they find out that the sun is made of shiny paper, they leave and continue their journey. They later find the home of an old man, who invites them to live in his garden, which is made entirely of sweets. They are saved when a beautiful young girl with shining blue hair called Tullipa comes out of the tulip and scares the snake away. They use a tulip to light their way, and are attacked by a giant snake. They meet a little creature, who joins them (in later books he is named Sniff). Moominmamma and Moomintroll are travelling through a dark and scary forest looking for Moominpappa, who has gone off adventuring with the Hattifatteners.

It is one of only two Moomin books to never be adapted for film or television, the second being An Unwanted Guest. It was the first book to star the Moomins, but is often seen as a prequel to the main Moomin books, as most of the main characters are introduced in the next book. is a book written by Finnish author Tove Jansson in 1945. The Moomins and the Great Flood (Swedish: Småtrollen och den stora översvämningen Literally: The Little Trolls and the Great Flood) is the first in the series of Tove Jansson's Moomin books, published in 1945.

The moomins and the great flood