Incendies

Following the death of their mother, Nawal, an Arab immigrant in Canada, Jeanne and her twin brother Simon meet with French Canadian notary Jean Lebel, their mother's employer and family friend. Nawal's will refers to not keeping a promise, denying her a proper gravestone and casket, unless Jeanne and Simon track down their mysterious brother, of whose existence they were previously unaware, and their father, who they believed was dead. Nawal has left two letters; one is to be delivered to Jeanne and Simon's father, and the other is to be delivered to their brother. Jeanne accepts; Simon, on the other hand, seemingly having had a more difficult relationship with Nawal and her unusual personality, is reluctant to join Jeanne on this pursuit.

Nawal came from a Christian family in a Levantine country, and she fell in love with a refugee named Wahab, resulting in her pregnancy. Her family murders her lover and nearly shoots her in an honour killing, but her grandmother spares her, making her promise to leave the village after her baby's birth and start a new life in the city of Daresh. The grandmother tattoos the back of the baby's heel and sends him to an orphanage in Kfar Khout.

While Nawal is at university in Daresh a few years later, civil war and war crimes break out, with Nawal opposing the war on human rights grounds. Her son's orphanage is destroyed by Muslim militants. Nawal leaves Daresh to try to find her son and boards a bus full of Muslim refugees. Christian Nationalists shoot the driver and fire into the bus full of passengers, only missing Nawal and a mother with her daughter. As the Nationalists prepare to set the bus on fire, the survivors try to escape towards the back of the bus. Nawal shows her crucifix and tells the Nationalists that she is Christian. She attempts to save the girl by claiming her as her own, but the girl runs towards the burning bus, calling for her mother, and is shot dead. Nawal finds her way back to town and joins the Muslim fighters. She tutors the son of a nationalist leader, eventually earning enough trust to smuggle in a gun to shoot the leader. She is imprisoned in Kfar Ryat and sings through the screams of other prisoners, earning her the nickname "The Woman Who Sings". To attempt to break her, she is raped by torturer Abou Tarek who leaves her saying, "sing now". She consequently gives birth to the twins.

After traveling to her mother's native country, Jeanne gradually uncovers this past and persuades Simon to join her. With help from Lebel, they learn their brother's name is Nihad of May (the month he was born in) and track down Chamseddine. Simon meets with him and Chamseddine reveals that he attacked the orphanage in Kfar Khout, where he spares the children and converts Nihad into an Islamic child soldier. He then reveals the war-mad Nihad was captured by the nationalists, turned by them, trained as a torturer, and then sent to Kfar Ryat, where he took the name Abou Tarek, making him both the twins' maternal half-brother and father; as such, both letters are addressed to the same person. Like Nawal, Nihad's superiors gave him a new life in Canada after the war. By chance, Nawal encountered him at a Canadian swimming pool and saw both the tattoo and his face, realizing her long-lost son was her rapist all along. The shock of learning the truth caused Nawal to suffer a stroke, which led to her decline and untimely death at age 60.

The twins find Nihad in Canada and deliver Nawal's letters to him. He opens both of them; the first letter addresses him as the twins' father, the rapist, and is filled with contempt. The second letter addresses him as the twins' brother and is instead written with caring words, saying that he, as Nawal's son, is deserving of love. Horrified at the truth, Nihad tries to chase after the twins, but they are gone.

Nawal gets her gravestone. Sometime later, Nihad visits it.