Lady Roselyn "Rose" of Whitmere is known as the Wild Rose—beautiful, untamed, and fiercely independent. Left to govern her late father's estate, she refuses every suitor seeking her lands, vowing never to marry unless for love. But when her defiance threatens to draw the wrath of the king, she is forced into an unwanted betrothal to Sir Tristan de Vere, a battle-hardened knight known as the Black Lion.

Tristan, loyal to his duty, sees marriage as merely another obligation. Tasked with bringing order to Whitmere, he expects a meek bride—but instead finds himself clashing with a fiery woman who refuses to yield.

As they navigate the treacherous politics of the court, hidden enemies seek to destroy them. Secrets from the past emerge, and soon, Rose and Tristan realize that their greatest battle is not with each other, but against those who wish to see them apart.