Miss Isabella Bright must rescue her sister from a disastrous betrothal. Her family refuses to listen to reason, leaving Bella to come up with a plan to thwart her sister's wedding. But Sir Sebastian is no longer the boy she remembers, but a virile man who awakens her deepest yearnings.

Sir Sebastian has avoided marrying the woman he barely knows. But above all else, he must honor the contract. When the estranged couple at last reunites, it is not his intended that sparks his interest, but her vivacious younger sister.

As the wedding draws near, Sebastian and Bella fight their growing passion and try to do what is right. But it soon becomes clear that the only way Bella can save her sister is to risk her own heart.