Their love was forbidden, but its echo echoes into eternity.

He will return… the runes told her.

When Mia inherits Birch Thorpe, a summer cottage in Sweden from her beloved grandmother, she faces a difficult decision. Fiance Charles urges her to sell the house and buy a luxury apartment in London. Mia hesitates. When an opportunity arises to join an archeological investigation to discover Viking artefacts on her property, similar to a gold ring inherited from her grandmother, she happily agrees. This will give her time and distance to think everything through.

Mia is completely absorbed in the excavation, and the handsome archaeologist Haakon Berger is also not completely indifferent to her. Like her, she feels a kind of kinship with the ancient inhabitants of these places, whose life destinies are revealed more every day. The ancient story of the Welsh noblewoman Ceri and the mysterious Viking known as the White Falcon, who kidnapped her in 869 BC, begins to unfold before Mia and Haakon's eyes.

Not only echoes of the past but also enemies threatening Birch Thorpe and its inhabitants will intervene in their lives, and Mia and Haakon will have to fight to protect what is most dear to them...