Police commissioner Lo Gatto is in charge of the local Italian police station within Vatican State. During an investigation, following the murder of a Vatican priest, he decides to question the Pope! For this reason Lo Gatto is punished with the transfer to a Sicilian remote island: Favignana. Nevertheless in the island there isn't anything to do for a police commissioner Lo Gatto decides to investigate the vanishing of a tourist. A journalist always in search of sensational stories helps him, even if the corpse wasn't find...