As the Legion Etrangère puts in at Napoli, legionnaire Walter escapes from the ship to meet a woman he still loves ,in spite of his five years away from home.
The voice of one of his former classmates studying singing causes an irresistible itch for a wealthy industrialist. The cause is an old aversion that the industrialist has for the singer: he can only heal by overcoming this aversion and transforming himself into a benefactor of the hated ex-partner.
A country braggart bets that he can spend a night with a local beauty. When he is surprised by her husband, he is not only forced to pay his friends money but also challenged to come up with a new identity other than Casanova or Don Juan.
