When his girlfriend dies of a drug overdose, a former Green Beret decides to take vengeance on the drug gangs responsible for her death.

In this conventional, broadly comic farce of greed and royal matrimony, nearly bankrupt businessman Victor Harris is marrying Maria-Helena, a princess who comes with a dowry that is made up of one half of her island kingdom. Her father, the cowardly King Arnold III is counting on the money this marriage will bring him. The country is now almost bankrupt because of the king's gambling debts. As Harris and the king look forward to their illusory profits from the royal merger, other characters add some liveliness to the otherwise predictable story.

In a world ravaged by violence, and other serious social problems, Joan - a character that alludes to Christ (which represents the return to Earth) arrives to Italy by train and preaching for the salvation of mankind, condemning the hypocrisy and hedonism.