Three women whose lives are shattered by ISIS travel intertwined journeys on two continents to find their shared destiny in fighting back.

Kenza and Yaël are two young French women who go to Syria to fight alongside the Kurdish forces. There they meet Zara, a Yezidi survivor. Born in different cultures but deeply united, the women-fighters heal their past wounds and discover their present strength, especially the fear they inspire in their opponents. The three young women soon bound together and become true sisters-in-arms.

Before Snowfall starts with a dramatic escape: Eighteen year-old Nermin runs away from her wedding in a village in Iraqi Kurdistan. Being the elder of the family, her younger brother Siyar becomes responsible for finding her and restoring the family reputation. The mission proves a dangerous one for the inexperienced Siyar. First stop is Istanbul, where he meets Elvin, a young girl who becomes his travel companion. On the way from east to west, through Europe and all the way to Norway, Siyar comes to realize his own need for respect, and for love.