André Loriot works for Dr Clairac in a laboratory producing euphoric pills. He searches in vain for an apartment where he can settle down and start a family with the woman who loves him, Juliette. To motivate himself and cope with the setbacks he encounters, he decides to swallow an excessive dose of euphoriants.

A father wants to try by all means to avenge the death of his son, a test pilot, whose responsible is the attractive female star of a Parisian cabaret.

Monsieur Benoit's existence is transformed when his dour wife suddenly thinks in a bout of folly that she will become a chanteuse and her husband the impresario.