It's 1918 in Orange, New Jersey, and everyone knows the "Ghost Girls." The proud holders of well-paying jobs at the local watch factory, these working-class young women gain their nickname from the fine dusting of glowing, radioactive powder that clings to their clothes after every shift painting watch dials. The soft, greenish glow even stains their lips and tongues. It's perfectly harmless... or so claims the watch manufacturer. When teeth start falling out, followed by jawbones, the dial painters become the unprepared vanguard on the frontlines of the burgeoning workers' rights movement. Desperate for compensation and acknowledgement from the company that has doomed them, the Ghost Girls must fight, not just for their own lives but the future of every woman to follow them.