Young Duncan M'Kethe finds himself caught in the web of Sir James Turner, the former Covenanter turned military leader of the persecutors. Duncan is torn by his hatred of his enemies, and his father's instructions to love them. He must be true to King Jesus while attempting to rescue his father.

The Crown and Covenant series follows the lives of the M'Kethe family as they endure persecution in 17th-century Scotland. Later, some family members flee to colonial America. The author weaves together fictional characters with historical figures from Scottish Covenanting history.