King Bele of Sogn had two sons, Helgi and Halfdan, and a daughter named Ingeborg. Across the fjord, lived the king's friend Thorstein Víkingsson whose son Fridthjof (Friðþjófr or Friedhof), called "the bold", was the bravest among men. Fridthjof had been raised with Ingeborg by their foster-father Hilding.

Both Bele and Thorsteinn died in war whereupon Helgi and Halfdan ruled the kingdom. They were jealous of Fridthjof's excellent qualities and denied Fridthjof Ingeborg's hand. They took her to Balder's sacred enclosure where no one dared touch her. Still, Fridthjof visited Ingeborg and their love for each other continued to grow.

This angered Helgi and Halfdan and Fridthjof was banished to Orkney. They also demanded tribute. While he was away they burnt down his homestead and married Ingeborg to the aged king Ring of Ringerike.

When Frithjof returned with the tribute, he burnt down Balder's temple and left to live as a viking. After three years he wintered with king Ring. Fridthjof's identity became apparent and the dying king appointed Fridthjof earl and made him the care-taker of Ring's and Ingeborg's child. After Rings death, Fridthjof and Ingeborg married and he became the king of Ringerike. He declared war on Ingeborg's brothers, killed one and made the second his vassal.

Tegne'r's poem, "Fridthjof's Saga," has been printed in Sweden in many editions and in almost every possible style. It has been illustrated and it has been set to music most famously by Heinrich Hofmann but also by Bruch and Johan Wagenaar. Moreover it has been rendered into English by eighteen different translators, and has been translated into nearly all the modern European languages.

33% of the publishers profit from the sale of this book will be donated to UNICEF.