While the rest of Chicago focuses on the enormous spectacle of the 1893 World’s Columbian Exposition, Charlotte Farrow’s attentions are entirely on one small boy --- her boy --- whom she has kept a secret from her wealthy employers for nearly a year. When the woman who has been caring for her son abruptly returns him to the opulent Banning home, Charlotte must decide whether to come clean and face dismissal or keep her secret while the Bannings decide the child’s fate.