The tribes prepare to attack the Roman camp before ships with reinforcements arrive. Segestes approaches Tiberius with a treacherous proposal.
Marbod confronts Tiberius and demands justice. Thusnelda and Folkwin set out on a mission. Gaius hides out in the forest and makes a shocking discovery.
Tiberius requires a test of Marbod's loyalty. Flavus proposes an offer to Germanicus. The tribal chiefs gather to name Marbod king but tragedy strikes.
Germanicus accuses Flavus of being a traitor. Ari brings Gaius to the village and then seeks revenge against Marbod. Thusnelda is angry at Ari for lying.