Mercy Kaplan doesn't want to be like her mother, saddled with crying kids and failing crops for the rest of her life. Mercy longs to be on her own - until her wish comes true in the worst possible way. It is 1918 and a deadly flu epidemic ravages the country, leaving her utterly alone and penniless.

Mercy soon finds a job with Mrs. Wilder. But there's something unsettling about the woman, whose brother died under mysterious circumstances. And then there's Daniel, who could sweep a girl off her feet if she isn't careful.