"Wojciech Smarzowski's 2010 film 'Incendies' is a Polish drama that tells the story of a family's dark past and the devastating consequences of their actions. The film follows the journey of two siblings, Justyna and Krzysztof, who are tasked with delivering their mother's ashes to their estranged father and brother in Canada. Along the way, they uncover shocking secrets about their family's history and the events that led to their parents' separation.

However, I have to mention that there seems to be confusion. There is another film titled "Incendies" released in 2010, directed by Denis Villeneuve, which is a Canadian drama film. It is based on the play of the same name by Wajdi Mouawad. The film premiered at the 2010 Toronto International Film Festival and received critical acclaim.

The film explores themes of family, trauma, grief, and redemption, raising questions about the nature of identity and the impact of past experiences on our present. With its powerful performances, poignant storytelling, and Smarzowski's masterful direction, 'Incendies' is a thought-provoking and emotionally charged cinematic experience.