Dishonorable Discharge (French: Ces dames préfèrent le mambo) is a French-Italian film starring Eddie Constantine as the American Captain Burt Brickford.

The captain lives incognito on an island in Middle America since he has been accused of causing an accident and didn't trust the military court.

Brickford hesitates to accept the job offer because the ship will be heading for Cuba.

He is even more suspicious when his employer named Henery Legrand can provide him with a new passport.

When they are on sea, Brickford discovers a great deal of dynamite in Legrand's ship.