Orion is a Subpar, expected to mine the tunnels of Outpost Five, near the deadly flash curtain. For generations, her people have chased cirium—the only element that can shield humanity from the curtain’s radioactive particles. She and her caving partner Dram work the most treacherous tunnel, fighting past flash bats and tunnel gulls, in hopes of mining enough cirium to earn their way into the protected city.
