Agnès, Juliette and Carmen's neighbour, writes children's storybooks that take place in a fantasy world, The Kingdom of the Winds. The intrepid sisters discover a passageway between their world and this extraordinary universe. Once on the other side, the girls take on the appearance of cats and discover Sirocco, a terrifying character who can control the wind.
A vicious beaver blankets the jungle with a dangerous pink substance that explodes when coming into contact with water. With the rainy season approaching, the miscellaneous team of animals must hurry to find the antidote.