When Mazie Goforth's lost love appears unexpectedly, soon followed by her prodigal family, she is forced to face who she has become and what might have been. Narrated by the frank and feisty Mazie, Water Flow Down follows her struggle to make sense of her past and an ever-changing present that is complicated by an orphaned teenager who asks for Mazie's help in finding the truth about her mother's death. As she treks across Texas with her nephew and the girl in a search for answers, Mazie encounters a slew of odd characters and stark locales. Ricocheting between past and present, the story culminates in a confrontation on a remote ranch, leading Mazie to realize what truly matters.