Animal photographer Janet MacPhail has just arrived at a sheep-herding competition with her Australian Shepherd, Jay, when she learns that two dozen sheep have disappeared. Police think the animals have wandered off in search of greener grass, but Janet sees and hears things that convince her the the animals have been stolen. When a livestock handler turns up dead and the sheep's owner disappears, the police and a pair of thugs pay Janet way more attention than she likes. She sets out to find answers, putting herself and those she loves in the killer's crosshairs.