On Rightside/Wrongside, women are in charge and men live behind the Border Fence. Their only interactions are for sex, which women control with rigid laws. Mothers raise daughters, and fathers know nothing of them. Women send sons across the Fence and never know if they live or die. Rightside President Alanna Olaffson and her countrywomen believe female empowerment is good and necessary, right up to the time it goes frighteningly wrong. Jessie, pregnant with a boy, meets Tenosha, who recently sent her son across the Fence. Unwilling to accept Rightside's laws, they hatch a plan that grows beyond their control. Smuggling, sabotage, kidnapping, and civil war force a cataclysmic face-to-face confrontation.