Grosse chaleur: 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.