According to reliable sources this is the last Asterix book that Uderzo will illustrate and may be the last Asterix book ever! Caesar's galley is stolen, Obelix drinks the magic potion (with terrible results) and the Gauls find themselves all at sea. In ancient Rome, the slaves are rebelling--and they've even stolen Julius Caesar's own warship, the finest in the Roman navy. Under the heroic leadership of Spartakis, the former galley slaves make for the small town where Caesar's old enemies Asterix and Obelix live. Now everyone must sail to the wonderful continent of Atlantis to find a cure. But, the Romans are on the ocean blue, too ... and the battles are about to come fast and furiously.