Set in 871 AD, the story follows a young Viking warrior named Steinar who is sent by his father, the dying King Bagsecg, on a quest to locate his estranged brother Hakan. With Hakan missing for years, the mission is critical as the king needs a successor capable of leading their people against the invading Saxons. Steinar, along with a small band of loyal warriors, begins a perilous journey through treacherous landscapes and hostile territories, facing various brutal challenges and encountering different tribes along the way.

As Steinar delves deeper into his quest, he grapples with the dark secrets of his family and the complex nature of loyalty and power. Each encounter tests his courage and determination, leading to dramatic confrontations that decide not only his fate but also the future of his people. Amid betrayals, fierce battles, and personal revelations, Steinar's path becomes one of self-discovery and transformation.