Veterinarian Ally Winter has found a new 'leash' on life since she moved back to her hometown of Willow Bluff, Wisconsin. Out for a walk with Domino, the black standard poodle she's looking after, they stumble across the body of Priscilla Green, dead beneath a willow tree. The town's finest - and handsomest - detective, Noah Jorgenson, is soon on the tail of the killer. But when Ally's true-crime obsessed Grandpa starts to interfere, Noah realises he could use the help. The fur flies as Ally, Noah, Gramps, and Domino race the clock to fetch the felon.