The galactic alignment of the planets is about to take place. The destiny of mankind is preserved inside the Lens, an alien object controlled by Creators. The fight for its possession triggers a war both in the heavens and on Earth.

Inhabitants of the last unconquered village in Gaul (ancient France) use a magical potion to hold their independence from Roman invaders.

Astérix and Obélix go to Egypt to help architect Numérobis who is building a palace for Cleopatra.