The Moomins and the Great Flood is the first book about the Moomins, originally published in 1945. It tells the story of Moominmamma and Moomintroll as they embark on a quest to find the missing Moominpappa and eventually discover the beautiful Moominvalley.

As they journey through a dark and mysterious forest, they encounter a flood of epic proportions, testing their resilience and courage. The story is set against the backdrop of a natural catastrophe, which adds an element of suspense and adventure to their journey.

With Moominmamma's kindness and patience, they face numerous challenges, symbolizing themes of family, hope, and perseverance. The book is beautifully illustrated with black and white artwork, bringing the whimsical world of the Moomins to life.