Eryn and Kari are two BFFs that attract like magnets who are sent into the hellhole known as the Glade. They are surrounded by a stone maze with killer monsters called Grievers that come out at night. Eryn and Kari are put at stake and they have to make choices that will decide life and death. Their choices will save the lives that surround them, or end them.

Years after Tris' death, a new Era was born. The factions were brought back together, and things were back to normal. But there have been legends of a Divergent that could bring the world together, or tear it apart. And the Erudite take no precautions, they want every Divergent dead.