The Romans having been humiliated many times by the rebel Gauls, Felonius Caucus, advisor to Centurion Nebulus Nimbus, suggests a single combat between Vitalstatistix, chief of Asterix's tribe, and the Gallo-Roman Chief, Cassius Ceramix of Linoleum.
As the fight begins, Getafix accidentally makes a potion which restores his mind, and retains sanity despite being hit by another menhir (thrown by Obelix in an attempt to cure Getafix by repeating the cause of the original accident).