Alarmed by a rare big storm, the inhabitants of the small Gallic village gathered at the house of chief Hasarengazfix, when a strange stranger, who claims to be a seer, opens the door. The swindler Sunyix quickly realizes that he has fallen into gullible company and extorts princely treatment from his hosts in exchange for favorable predictions. Asterix is ​​the only one who sees through the sieve, but his friends do not listen to him, and when the charlatan unexpectedly disappears, they make him responsible for the disasters predicted by Sunyix. However, the false seer was actually captured by the Romans, who also hoped to profit from the situation.