New York pretentious Diana Sullivan is writing a series of articles on the theme of "family" for Cosmopolitan magazine. Primarily to keep an eye on her but also because of the personal connection, Diana invites her mid-teen daughter, Grace Sullivan, to accompany her on a trip to research the next in the series, dealing with their own family, most specifically a wing that lives deep in the backwaters of the Louisiana bayou, which has been largely overtaken by oil companies of late. They are most directly connected by brothers: Diana's grandfather Mike, and Joe, the patriarch ...