In the shadow of rebellion, Angharad, daughter of OwainGlyndŵr, is a symbol of Welsh defiance against English rule. Captured and imprisoned in the forbidding walls of the Tower of London, her spirit remains unbroken. Among her captors is Gareth, a young English soldier torn between loyalty to his king and his growing admiration for the fiery woman whose strength defies her chains.

When a strange, otherworldly power awakens within the tower, an accidental touch of a carved stone catapults Angharad and Gareth into the future. To her shock, this is Gareth's home, revealing a man far more complex than the soldier she first met.

As Angharad adjusts to a life she never imagined, she and Gareth can't deny their feelings that has bridged centuries. When Christmas arrives, Gareth knows the only gift he wants to give her is a promise of forever.

Will Angharad embrace a future where love transcends time, or will the call of her past be too strong to ignore?