Having unexpectedly lost her husband and lacking the means to support herself, Josie DiSanti and her two daughters take refuge in the small town of Mill River. The sisters, Rose and Emily, are inseparable growing up—until a shocking tragedy tears them apart. Years later, they return to Mill River for the reading of their mother's will, where they learn that Josie would do anything to force their reconciliation: the sisters must move into neighbouring houses and work together to locate the key to Josie's safe deposit box, which contains their inheritance. And so, left with no choice, Rose and Emily reluctantly begin their search...