In a world where invading fiends from an alternate dimension wiped out most of life on Earth, seventeen-year-old Leah wakes up alone after an explosion that should have killed her. Lost and hunted, she finds herself cornered by the fiends that stalk the wilderness, killing anyone in their paths. When a latent fighting power awakens in her blood, she's discovered by a group of flame-conjuring warriors who want to recruit her. They're known as the Pyros and they're the last line of defence between Earth and the fiends. Keen for a shot at revenge on the beasts which killed her family and destroyed her world, Leah joins forces with the Pyros.
The trouble is, nobody's telling Leah anything. Like the reason for the literal skeletons buried underneath their base. And the strange memories that intrude into her mind, which appear to belong to a hostile fellow warrior who saved her life. If Leah doesn't uncover the truth about why the world ended the first time, her new safe haven might go up in smoke…
Leah has joined the Pyros, a group of warriors with astonishing powers, who fight the fiends who wiped out most of life on earth. But their worst enemy is one of their own. Jared, the sadistic scientist who betrayed the Pyros, has captured Leah's ally, Cas. To get him back, she must leave her new friends and face the wilderness alone. But Jared’s not the only threat out there. The fiends are moving, forces stir on the other side of the divide, and if Jared’s plan succeeds, it’ll spell disaster for their world.
And that’s if the dark transformation in Leah's blood doesn’t kill her first.
With the world on the brink of a second war with the fiends, Leah and the other Pyros should be amassing their forces. But the survivors of the last battle have scattered, pushed back by the army led by the terrifying, bloodthirsty Fiordan warlords.
Leah and her friends must take the ultimate risk to find the truth about the Fiordans, and how to unlock her potential as Transcendent before the fiends wipe out the Pyros, along with the rest of humanity.