It’s Christmas holidays in this small story-book village of Quebec. The children of the village split themselves into two groups, build an impressive snow fort and begin preparing for a week-long snowball war. The youthful rivalry opens up lingering tensions among some group members who start seeing each other differently than they had before. This is particularly true for the leaders of the two gangs, Luc and Sophie. They’ll soon find themselves torn between nascent love and the will to lead their own group to victory.