Purge is mostly quiet and almost laconic in its tone. In a subdued fashion it tells the stories of the lives of two seemingly unrelated women in Estonia over a span of more than forty years. A major part of the story is about the elderly and isolated Aliide Truu who has lived her whole adult life in an Estonia that was part of the Soviet Union; an Estonia dominated by the Communist party where neighbors and colleagues spied on one another. Another part of the story is about the young Zara – a victim of sex trafficking in the West who has escaped her captors.