1860. Harriet is trying to care for her ill mother, and has just lost her job. The last thing she expects after her mother dies is a marriage proposal, but she has no choice but to accept. And so begins her new life with Noah Tukes. She finds herself at the heart of a dysfunctional family, and a particularly difficult relationship with her unkind mother-in-law. The only person in the household who appears to be normal is Noah's older brother, Fletcher. In the middle of this warring family, Harriet finds comfort and companionship in Fletcher. But what is there to do, when the law and the Bible say that a man can't marry his brother's wife?