Grosse chaleur (2004)

On vacation in the Luberon, a high ranking civil servant, in love with the good old fashioned thinking, has to put up with a bunch of troublemakers in his haven of tranquillity and prevent them from watering in circles. Wife, child and mother-in-law in the front row, brother-in-law and sister-in-law as bonus gifts. Add to that a terrible heat wave and a mother left alone in her apartment in Paris... The cocktail is boiling, even explosive... with this heat it will be hard to keep it cool.

Unfortunately the movie Grosse chaleur is not yet available on HBO Max.