Un hombre honesto. Maresciallo Cecchini is accused of undergoing drug traffic. Realizing he has been framed for an unknown reason captain Anceschi and Don Matteo will investigate until they find the real culprit.
Maresciallo Cecchini is suspected to be a drug dealer! He supposedly only keeps his position as police officer to cover up his life of crime. Don Matteo and Captain Anceschi have to prove their friend's innocence.