Anthology film with three shorts each featuring a famous detective: Monsieur Wens, Lemmy Caution and Maigret.
Kohlman, the attorney for the Fournil bank, diverts money from the institution. To hide his malpractices, he imagines to remove the director, the young and overconfident Clement Fournil, during a cruise at sea on the yacht Emile Frechisse.
The survivors of a forced landing progress in a hostile African bush.
