In a small New England town, Joan Hapgood is content with her life until the events of one fateful afternoon trigger a long string of tragedies that threaten both her future and her sanity. It starts when Joan's mother, Emily, who has been steadily deteriorating under the effects of Alzheimer's disease, accidentally starts a fire while trying to cook. To say Joan's relationship with her mother is strained would be a gross understatement. In Emily's eyes, Joan has always been a poor second to her sister, Cynthia, who was beautiful, devoted, and bright. Despite Cynthia's death many years before, Joan still lives in her big sister's shadow whenever Emily is around. Not only has Joan never been pretty enough, bright enough, or loving enough, but she has a bastard son whose father remains unknown -- all unforgivable sins to Emily.