Carly Kennedy's life is in a spiral. She is drowning in work, her divorced parents are going through their midlife crises, and somehow Carly's sister convinces her to foster Baxter, a basset hound rescue with a bad case of the blues. When Carly comes home late from work one day to discover that the dog walker has accidentally switched out Baxter for another perkier, friendlier basset hound, she has reached the end of her leash.