The well-known little village from the Asterix and Obelix-comic books is in trouble: It is the last place not controlled by Rome. When Tax collector Claudius Incorruptus does not get his money from the villagers, Julius Caesar himself comes to the place to see what s so special about their resistance. A special magic potion, prepared by the village s druid, gives incredible power to those who drink it. And Obelix, who fell into the pot as a child has been invincible ever since. With the help of Tullius Destructivus, an intrigeur, the Romans try to get Obelix and the druid into their hands in order to wipe the little village off the map, when the last potion of it s stock has been used up. But each individual also has some plans of his own...

Obelix falls for a new arrival in his home village in Gaul, but is heartbroken when her true love arrives to visit her. However, the lovers are kidnapped by Romans; Asterix and Obelix set out to rescue them on a dangerous journey that will involve gladiators, slavers and beauracracy - and a personal encounter with the Emperor himself, Julius Caesar...