With the help of an "idiot scout", Brochant manages to find a "gem", François Pignon, a Finance Ministry employee whose passion is building replicas of landmarks with matchsticks.
After Brochant starts to suffer from lower back pain, his wife, Christine, leaves him shortly before Pignon arrives at his apartment.
Arriving at the apartment, LeBlanc switches between assisting Brochant, and laughing uncontrollably at his discomfiture.
However, after encouraging Christine to return home, Pignon makes a final gaffe: he picks up the telephone when she calls to talk to Brochant despite having previously told her he was in a phone booth, thus arousing her suspicions that he has simply been repeating lines fed to him by Brochant (as he indeed had been in previous conversations).
"Con" can be translated as "prat", not as is popularly believed to be the English equivalent for "Connasse": "Cunt".