In a world where puppets coexist with humans but face discrimination, Phil Phillips, a disgraced puppet ex-cop turned private investigator, is drawn into a new case involving the gruesome murders of his brother and other former cast members of a beloved puppet TV show, "The Happytime Gang." He teams up reluctantly with his old partner, Detective Connie Edwards. Their rocky past and distrust of each other complicate their investigation. As more cast members fall victim to the killer, Phil and Edwards must navigate the seedy underbelly of the puppet world, dealing with mobsters, blackmailers, and drug dealers, all while trying to uncover clues that lead to the elusive murderer.

As the investigation progresses, Phil grapples with his painful past and the reasons behind his separation from the police force. The case forces him to confront old demons, including his unresolved feelings for his human ex-flame, Jenny, who also happens to be a former member of the Happytime cast. Each twist and turn brings them closer to unraveling a conspiracy far larger and more dangerous than they anticipated. Facing increasing danger, both Phil and Edwards must push past their differences and work together to stop the killings before the threat engulfs not only the puppet community but potentially wider society as well.