We find ourselves in the year 52 BC. All of Lutetia is occupied by the Romans. All of Lutetia? No! A gang of indomitable animals, led by Idefix, is still resisting the invaders. Thanks to Teutates, Idefix is cleverer, Turbine is faster, and Dertutnix is stronger than Cerberus and any of his guard. However, this does not stop the occupiers from trying to establish a Roman order in Lutetia. But not as long as Idefix and his friends still have a say! Because dogs that bark also bite - but only the Romans!.