It is 1685 and England is on the brink of a renewed civil war. King Charles II has died without an heir and his brother James is to take the throne. But the people are bitterly divided, and many do not welcome the new king or his young queen. Ned Ferryman cannot persuade his sister, Alinor, that he is right to return from America with his Pokanoket servant, Rowan, to join the rebel army. Instead, Alinor and her daughter Alys, have been coaxed by the manipulative Livia to save the queen from the coming siege. The rewards are life-changing: the family could return to their beloved Tidelands, and Alinor could rule where she was once lower than a servant.

Alinor's son is determined to stay clear of the war, but, in order to keep his own secrets in the past, Livia traps him in a plan to create an imposter Prince of Wales--a surrogate baby to the queen.

From the last battle in the desolate Somerset Levels to the hidden caves on the slave island of Barbados, this third volume of an epic story follows a family from one end of the empire to another, to find a new dawn in a world which is opening up before them with greater rewards and dangers than ever before.