The novel takes place in three of six metaphysical Zones that encircle the planet Shikasta (an allegorical Earth), and concerns two ordained marriages that link the patriarchal Zone Four with the matriarchal Zone Three, and the tribal Zone Five. The story is told from the point of view of the matriarchal utopian Zone Three, and is about gender conflict and the breaking down of barriers between the sexes. Lessing called the "Canopus in Argos" series "space fiction", but "The Marriages Between Zones Three, Four and Five" is generally referred to as feminist science fiction.