The Celts of 43AD Britannia are a divided and warring group of tribes. King Pellenor of the Cantii has to manage his strong willed daughter Kerra, the fuel of their conflict with the Regni.

Pellenor is convinced they can destroy the Romans using force but when Kerra learns of the suffering of their Celt prisoners, she seeks an alternative approach.

General Aulus returns from his visit to the Underworld. Pellenor is furious to learn of Kerra’s secret visit to the Romans. Divis persuades two Romans to get him into the enemy camp. Armed with the knowledge of her father’s survival, Cait reunites with Divis to provoke a change in plans.

Veran leads his troupe of Druids to Crugdunon Fortress to deliver judgment to Kerra. Events take an unexpected turn and lead to a grand emotional sacrifice and a new order for the Regni.

When Kerra is given a deadline to make a decision, Lindon offers her an alternative path. Phelan struggles to come to terms with the recent events, while Amena spirals down a self-destructive path. Aulus visits Queen Antedia of the Regni. Divis seeks answers in the Underworld.

Divis receives a deadly mission. Kerra adjusts to her new role as vendettas are plotted against her. Cait and her father find peace at Crugdunon but it is short lived. Aulus agrees to talks with Kerra but is sidetracked by his own personal mission.

Camped out in the deserted village of Locerly Cross, Phelan is not convinced by Ania's confidence in their prophecy.

Four months on and the Cantii are still under siege from the Regni. Antedia uses a spy to her advantage.

Divis tries to track down the abducted Cait. The siege of the Cantii reaches a bitter and violent end. Phelan and Ania seek answers from Druid Veran. Veran considers the hope that is left for them all in the form of Cait.