Sent out to prevent Getafix from being thrown off the edge of the Earth by the Romans, Asterix and Obelix find themselves in America and encounter a Native tribe.

When the brilliant but sexually inexperienced computer science student PIET is turned down by bright and beautiful KLARA, he is deeply hurt. He takes a dose of a sleep medication, leading to a tumultuous night during which he loses his innocence in more ways than one.