Bernard is an inveterate seducer. He has three mistresses, all flight attendants, whom he has promised to marry. He has organized his schedule around the flight schedules of the three women, receiving them in turn in his bachelor pad. Then Robert, a childhood friend, shows up and asks him to put him up for a while. The situation becomes even more complicated when the women's schedules change. The Don Juan doesn't know which way to turn and juggles his appointments. Doors slam in all directions and the inevitable happens.

On the verge of concluding the trial of his life, Pierre Maillard, a cold and rigid lawyer, is forced to spend a day with the most unpredictable man imaginable. A day of madness, which seems absolutely endless to him, and where anything can happen, even the most improbable things. So why does Pierre's secretary always trip over the carpet? And why does his boss always ask him the same thing? Finally, how is it that Pierre always receives the same phone call?