Gregor, a druidic bard, a mystic in the certainty of imminent death, is supernaturally catapulted from the world of the ancient Britons to the slopes of the Black Mountain in the heart of medieval Wales. Stunned by his new surroundings, gravely injured, he stumbles into a beautiful valley only to be immediately chased and arrested for the murder of a woman.

Angharad, an outspoken young woman with a taste for adventure beyond the tiny hamlet she came from and naïve in the ways of the castle court, finds herself torn between two men of very different character. One, a nobleman's son of high station, one a landless warrior.

This mystery romance embroils these four characters in a sinister crime, in this epic tale of betrayal.