They'll do anything to save their children's lives, even if it means working together.

Kera Montgomery is still mourning the sudden death of her husband, Morpheus, when her youngest son falls victim to a mysterious plague. With no medicinal cure, Kera must travel to the Long Lakes, where magical griffons capable of healing any ailment reside.

As an heiress unused to grueling travel, Kera struggles with the immense emotional and physical strain of her journey — one made more complex when she crosses paths with her husband's former mistress, Aurora. Aurora's daughter is afflicted with the same plague as Kera's son, so despite their incendiary history, the two women agree to set aside their differences and travel together.

The road is fraught with dangers, both living and dead. Each night, old battlegrounds reanimate with ghosts who don't know they've died, and murderous wraiths hunt for stray travelers caught out after dark. If Kera, Aurora, and their children are going to survive, they'll need to confront the past that's been haunting them since their journey began. And perhaps in the process, discover that old friends may not be as trustworthy as they once thought — and old enemies may become so much more.