Grossly mistaken identity provides the impetus in this Italian farce. Loris is an anti-social fellow with a high sex drive. During a party he is pointed towards an "easy mark." Unfortunately he approaches the wrong woman. When he discovers his mistakes, he nervously apologizes for the attempted liberties. A run-away chain-saw becomes involved and the frightened woman ends up filing a police report. Her report leads police boss Frustalupi that he has finally found the crazed sex killer the "Mozart of vice" whom Frustalupi has hunted for the last 12 years. Situations go from bad to worse as the police begin surveillance upon Loris whose every action becomes misconstrued by them. Things get even stickier when they put policewoman Jessica on the case as undercover bait.