On the cusp of turning thirty, San Diego vet-tech Randi Sterling yearns to heal her wounded family relationships, but when her mother barges into her life unannounced, bringing her yappy, spoiled little dog with her, and forcing her new-found passion for dog agility upon her, Randi finds herself biting her tongue and keeping her feelings leashed. Things get worse when her mother's best friend drops dead competing on course for an important agility championship, and her mother pressures Randi to investigate her death. Randi agrees, but soon finds out all is not what it seems with her mother and her motives.