Seventeen-year-old Charlotte Buchanan's quiet Appalachian life shatters when dragons from Norse legends invade her world, hunting for their lost queen.

Amidst friends that mysteriously go missing, a rekindled forbidden love, and a fast-approaching war, Charlotte uncovers a horrifying truth—she's transforming into the very creature threatening her world.

With her folk-healer sister's help, Charlotte's search for answers takes her to the edge of the universe, to Asgard itself, where she clashes with dragons, and the fate of nine realms hangs in the balance.

To survive, she must embrace the power of a Thunderer, risking everything to save her world—or become the legend she's been running from.

By USA Today bestselling author and award-winning author, Merrie Destefano.