Lena, who is now an active member of the resistance, has changed greatly. The rebellion, which the previous novel "Pandemonium" introduced, has now flared up in full force, and Lena finds herself right in the thick of the fighting.
After Lena and her friends managed to save Julian from the noose, they retreated into the Thickets. But even there there was nothing left of the former “quiet harbor.” Resistance cells open up all across the country, and the government can no longer avoid acknowledging the existence of the Disabled. Meanwhile, Regulators continue arriving in remote provinces and tracking down rebels.
While Lena wanders through territories in the Thickets that grow ever more dangerous, her best friend Hana lives a quiet life in Portland without love, in the status of an engaged fiancée of a young major. "Requiem" is written from the perspective of both girls. They live their own lives on different sides of the barricades until, at one moment, their stories intersect.
In the novel by Lauren Oliver, lyrical moments are elegantly interwoven with tense episodes— for example, when Lena meets her first love, Alex, the boy she believed had died. The refined, multi-layered "Requiem" leads to an exciting conclusion of the trilogy.