As the Christmas holidays begin, a group of 10 war-obsessed kids have a wave of inspiration: What if they spend the next two weeks engaged in a simulated war, armed only with shields, wooden swords, snowballs, and a fierce sense of competition? With a bounty chest waiting for the winners, the two sides gradually grow in size, and the war grows in importance, taking over all aspects of their lives.

Recovering from her experience as a caregiver for her mother, Maripierre sits in her cottage. Her sister Raphaëlle visits her and the two reflect on the day their mother sought out medically assisted death on October 5th.