The Wind in the Willows is an adaptation of the classic children's novel by Kenneth Grahame. In the movie, Mole is a reclusive creature who is tired of his boring, solitary life and decides to venture out of his burrow to see the world above ground. On his first outing, he meets Rat, a cultured and adventurous animal who lives on the riverbank. They become fast friends and go on many adventures together, such as picnicking on the riverbank and exploring the countryside.
Toad, a wealthy and frivolous amphibian, becomes the third member of their group and invites them on a caravan trip. However, Toad becomes obsessed with his new car and his reckless driving causes them to get into numerous accidents. Mole and Rat seek the help of Badger, a wise and dignified creature, to try to reason with Toad and curb his dangerous behavior.
Despite their efforts, Toad continues to cause chaos and eventually gets arrested for stealing a car. He is sentenced to 20 years in prison but manages to escape by enlisting the help of the jailer's daughter and dressing up as a washerwoman. Meanwhile, Badger is attacked by a gang of invading weasels who want to take over Toad Hall, Toad's grand country residence.
Toad eventually returns home but finds out that Toad Hall has been taken over by the weasels. He and his friends come up with a plan to take back their home and successfully drive out the invaders. The Wind in the Willows is a delightful tale of friendship, adventure, and loyalty that is enjoyed by audiences of all ages.