After his brother is executed for treason, Ailig MacLeod returns to Castle Assynt bearing a heavy heart and a grim message: the Scottish king has ordered Ailig’s father to forfeit the clan chiefdom - or face deadly consequences. But before he can reach home, Ailig encounters Morainn MacRailt, a beautiful young widow living a solitary life in the glen. He is taken by her quiet confidence and the powerful connection that sparks between them, but his duty lies at Castle Assynt, where his clan is in turmoil.
Determined to bring the MacLeods to order, yet wary of whom to trust, Ailig makes a fateful decision: he offers Morainn the protection of the castle in return for becoming its chatelaine. Clever Morainn quickly becomes a valued advisor, and as the trust between them grows, so does an undeniable passion. Together they endeavor to restore the MacLeod legacy - and discover a once-in-a-lifetime love.