A young boy takes his mother's place in a group of gemstone-based beings, and must learn to control his powers.

In a ruined and toxic future, a community exists in a giant underground silo that plunges hundreds of stories deep. There, men and women live in a society full of regulations they believe are meant to protect them.

16-year-old Henry Coles is an outsider in her new town of Reston, New York. With a major chip on her shoulder and no friends, she remains withdrawn and isolated, but everything changes when a traumatic encounter with a classmate triggers something deep within Henry— unleashing a power she cannot control.