Mauro, is engaged in a difficult anti-drug operation. In the meantime, the wedding between Commissioner Giulia Corsi and Inspector Paolo Libero is about to be celebrated. Ardenzi is taken hostage by a bandit during the anti-drug operation.

Commissioner Corsi and Paolo Libero investigate a heroin trafficking inside a warehouse of slaughtered animals. In the meantime, Francesca gets back in touch with Ardenzi. Ingargiola buys a beautiful motorbike that, however, hides many dangers.