Sky Dancers: Eternal Apocalypse, Book 1

Elle is a typical doomsday bunker teenager, at least until she finds a crumbling section of tunnel and discovers a big lie about her world. She craves freedom, even if it means going into the plague-ravaged wasteland outside her home. But once there, she discovers the true threat to her people, and her own future, lies coiled inside the dark tunnels she left behind.