In the gritty underworld of New York's sewers, Joe Phenix, the notorious sewer rat, stumbles upon a ghastly discovery that leads him and veteran sleuth Old Search down a twisted trail of mystery and murder. As they unravel the secrets hidden beneath the city streets, they uncover a chilling connection to a prominent millionaire's disappearance. With danger lurking at every corner, will they solve the case before they become the next victims of the sinister forces at play?