电影讲述一群生活在加拿大小镇的孩子，在寒假来临时，为了打发无聊的时间，而约了一场超大规模的雪仗，雪仗的规模在两方孩子们的挑衅、误会等碰撞中不断升级，进而演变成雪堡保卫战，最后发生在大狗克莉奥身上的小变故阻止了孩子们的战争…

In the year 1524, the former Assassin Ezio Auditore retired to a villa in the countryside of Tuscany, with his wife Sofia and children Marcello and Flavia. While Ezio wrote in his study, Sofia asked him to watch Flavia w…