Incompatible private detectives, Jack Bullet and Sal Malone, face off against the sultry Veronica Suede when they are hired to find the murderer of Frankie 'The Fish' Manicotti. Tracking their suspect, the tonally challenged trombone player, Ambrosius 'The Pharaoh' Saunders, to the Fat Brass, the boys find all is not on the up and up. Can they solve the mystery of 'The Rusty Trombone'?