Joel Edgerton portrays "Narvel," the chief gardener for the affluent and somewhat unusual "Norma" (Sigourney Weaver), both of whom take immense pride in their gardening skills and accomplishments. During an afternoon tea, she informs him that her great-niece, "Maya" (Quintessa Swindell), will be joining his staff as a trainee. Norma admits to knowing very little about the young woman, but Narvel consents, and Maya su…