[2] On release, Rich Johnston writing for the Bleeding Cool news and review website, stated that it "is my favourite Asterix book since original writer and co-creator Rene Goscinny died.

His chief medical officer Isivertuus has long formulated a plan, which he calls "White Iris", to improve the army's overall morale and health with psychological persuasion, and is therefore put in charge of a legion in Armorica for a test run.

Isivertuus settles in Camp Totorum and pays regular visits to the Gaulish village, where he begins to endear himself to the locals using poetry and psychological finesse in order to undermine their will to resistance.

Worried, Asterix, Getafix and Vitalstatistix expel Isivertuus from the village, but the sage successfully seduces Impedimenta into accompanying him to Lutetia so Caesar can use her as leverage to force the Gauls' surrender.

Asterix, Obelix and Vitalstatistix burst onto the stage in mid-performance, triggering a fight with the Roman guards and a happy reunion between the chief and his wife.