Baretta is in a blue funk because of a string of failed relationships with women; in fact, the opening finds him nursing a massive hangover and crawling to the phone after going on a bender after another breakup. So who does he get as a new partner? A real bitch --literally. Kelly, a female dog, is brought in to work with Baretta as both sniff out (him figuratively, her literally) a dangerous psychedelic mushroom. Baretta gradually gains respect for the dog -- but then both of them start ducking rifle bullets from an aging Mob hit man. Fortunately, the hired gun is getting so old he can't shoot straight, but it just makes him more and more determined to kill. Finally Rooster (who's carrying drugs on him and is sniffed out) tells Baretta there is a murder contract on the dog rather than on Baretta.