After falling while picking mistletoe, the druid Miraculix decides to make provisions for the future of the village. Together with Asterix and Obelix, he travels across Gaul in search of a young, talented druid to whom he can pass on the secret of the magic potion ... But be careful! Not only the druid's loyal admirers dream of knowing this secret. It also calls envious people to the scene, including a particularly nasty one: Demonix! Since they were together in the Druid School, he and Miraculix have been archrivals. And now the ghastly demon finally senses an opportunity to take revenge ... This illustrated album of the film tells the story of the movie Asterix and the secret of the magic potion.