It's a snowy Christmas Eve in Montréal. As such, it should be a busy day for snowplow operator Léopold Z. Tremblay, if he can only get his snowplow to start. It does end up being a busy day once he does get his snowplow going, but he is busy not doing work but running his planned Christmas errands such as going to the bank for a loan so that he can buy a mink coat for his wife Catherine and hockey equipment for his son Jacques, picking up Catherine's sexy entertainer friend Josette who is in town for the holidays for a singing gig, going to midnight mass which he's never missed and where Jacques, a singer in the church choir, is performing a solo, and then perhaps attending a late performance of Josette's. Léo's plans may be thwarted by his friend and boss Théophile Lemay, who wants Léo to get back to work and who is tracking Léo throughout the city. But as Théo finds then loses then finds Léo again, Théo obviously has other things on his mind as well, which results in among other things Théo dispensing a little Christmas Eve advice.
—Huggo