She has left them sealed letters she wants delivered to a half-brother they never knew about and a father they thought was long dead, which involves the pair travelling to the Middle East to find them.
Meanwhile, the earlier timeline shows the agonies of Nawal's earlier life. That includes her survival of an attack on a bus by Christian militia which is certainly a vivid depiction of the horrors of a war, with further traumas to come.
But as powerful as moments like that are, and as gripping as the central performance of Azabal is, Incendies still feels like a film that is an overwrought exercise of narrative sleight-of-hand.
It's not without emotional punch, especially in its final reels, but it's undercut by the melodramatic contrivances which get us there.
Stars: 3.5
Cast: Lubna Azabal, Melissa Desormeaux-Poulin, Maxim Gaudette
Director: Denis Villeneuve
Rating: R16 (violence and content may disturb)
Running time: 130 mins
Verdict: Powerful but uneven Middle East family saga.