Getafix has been captured by Romans and catapulted off the edge of the world and so Asterix and Obelix follow in hot pursuit to find their wizard. When they reach what they think to be the edge of the world, our heroes finding themselves in America. Danger lurks on these foreign shores, however, and Asterix and Getafix are both captured by Indians and held prisoner. All is not lost, though, as Obelix saves the chief's daughter's life and our Gaulish heroes manage to befriend the Indians. All except one, who is determined to steal the secret of the magic potion from Getafix. Will Asterix and Obelix save the day?