Like the title suggests, this comedy from director Marcel Bluwal, is like a carambole game. Once it hits, it hits more than 1 target. Jean-Claude Brialy played the lead role as Paul Martin, a smart employee in a giant company in tourism industry. Paul is about to marry his superior's daughter and needs money, but the company "rewards seniority, not talent". To achieve a higher position, Paul must wait until one of his seniors dies or retires, and that can take years. As he cannot wait that long, Paul has a little plan. What happen instead is a series of accidents which remove Paul's bosses one by one, and in the end of the movie we see him becomes the CEO.
Louis de Funès played Charolais, the original CEO. He is the first victim because of his own undoing. Interesting that Paul's or Charolais's schemes to harm other fail. While Paul is lucky, at least for the time being, this proverb applies to the latter:"Whoever digs a pit shall fall therein: and he that rolls a stone, it will return on him." (Proverbs 26:27)
Paul himself doesn't go unpunished. When in the beginning he soon to be marry and has a son (with 2 different women, though), now there is no wedding and no son for him. Furthermore, he feels threatened when a smart, ambitious employee (played by Alain Delon), like himself in the beginning of the movie, appears and says to him exactly what he said to Charolais. Paul is afraid he cannot escape his karma.