A seemingly routine case becomes something darker and deeper for novice private investigator Care and her feline companion, Blackie. Blackie does not trust Care's new client, factory owner Mr. Gravitz, who has hired the young PI to shadow one of his workers, a man he suspects is stealing from him. With his feline sixth sense, Blackie knows the client is not telling the truth - but how can he protect and warn his companion, Care, when he is is only a cat? When Blackie and Care come across a decomposing body, the case takes a disturbing twist - and leads the pair dep into the dangerous underworld that underpins the city.