After the death of the paranoid emperor Tiberius, Caligula, his heir, seizes power and plunges the empire into a bloody spiral of madness and depravity.
Gaetano, a young Neapolitan, decides to leave home, work and friends, to look for other moments of life and meet other people.
A classical art professor and collector, who doubles as a professional assassin, is coerced out of retirement to avenge the murder of an old friend.
