As July 4, 1928, approaches, Sheriff Lily Ross and her family look forward to the opening of an amusement park in a nearby town, created by Chalmer Fitzpatrick - a veteran and lumber mill owner. When Lily is alerted to the possible drowning of a girl, she discovers schisms going back several generations in an ongoing dispute over the land on which Fitzpatrick has built the park. Not only that, but a young woman is found murdered on Fitzpatrick's property at the same time a baby is left on his doorstep. As the two crimes interweave, Lily must confront the question of what makes family: can we trust those we love?