Decidually Obelix is incorrigible! Despite the repeated warnings of the Druid Panoramix, he drank of the magic potion. And the result is surprising: he becomes a little boy again... without defense, at the mercy of the Roman legions who capture him! Asterix going after them, will sail to Atlantis country of eternal youth. Will he find there the antidote that will heal his inseparable friend?