His father had started the journey, but was betrayed. Instead, he took refuge on the coast, away from the clans.

Brennus is only a child when a treacherous attack razes the fort of Lagouzos where his father was the commander. He was the only survivor and took refuge on the coast, away from the clans. Those who did not die were enslaved in almighty Rome’s greatest gold mine in Gallaecia where the Roman, along with bridges and roads, were also bringing destruction both of the land and of old customs. 

Tana, one of the last Sisters of the Order, weaves a plan to prevent this from happening. The young woman -destined to lead men- believed it possible. She persuaded the clans to put aside their old quarrels and unite against the invader. She went and looked for Brennus in order to involve him. 

Meanwhile from Rome, among excesses and drowned in wine, Nero cries out for revenge and howls absolute conquest. Never before so many legions had been assembled. The watchword was to kill anyone who could hold a weapon.

That's when lineage and inheritance prompted Brennus to fight, the only one way out being to take over what his father had started and rebel against the invaders. 

Together with Tana, he will face the most powerful empire of all time. She united the clans, he challenged Rome.