The strange little guy in the blue hood is well known to Krosmoz. His name is Joris and he's proposing to take you on a fantastic adventure. Our hero is leading a happy life in his magic shop in the city of Bonta. But one day, when he seeks out his idol, a Gobbowl superstar, everything changes for the worst as Julith, the vengeful witch, is back in town!

Julius Caesar plans on kidnapping Getafix but Asterix and Obelix save him. Whilst attempting to scatter the attackers, Obelix accidentally strikes Getafix with a menhir, the impact of which causes amnesia and forgets the recipe of the magic potion.