The ancient Gaullish tradition dictates that a future leader must prove their worth by challenging and defeating others to become the chief of two tribes. Vitalstatistix, the current chief, is unfazed by this custom due to the magical potion brewed by Getafix, the village druid. However, when Getafix encounters a mishap and forgets how to make the potion, Vitalstatistix is suddenly thrown into a surprising challenge that threatens his leadership. With the fate of the village hanging in the balance, Vitalstatistix must find a way to overcome this unexpected obstacle and prove himself worthy of continuing as the chief.