A birth certificate hidden in a dead woman's closet. A father she was never supposed to find.

Grace is a veterinarian and a survivor of a Florida trailer park childhood. She has made self-reliance her religion. When a shoebox reveals the father she was told never existed, a climatologist in the Alaskan wilderness, she boards a bush plane to find the truth.

The journey doesn't just change her life. It nearly ends it.

As coordinated cyberattacks bring the nation to its knees, Grace's plane is shot from the sky over the Alaskan tundra. Suddenly, she is a thousand miles from home and responsible for the survivors: an eleven-year-old girl with a fierce heart, a researcher with dangerous secrets, a hiker whose smile feels like a warning, and a wolfdog who has lost everything.

A hundred miles of Arctic wilderness stand between them and safety. Between glacial river surges, a stalking grizzly, and starvation, Grace realizes the greatest threat isn't the environment.

It is the person standing next to her, someone whose mission has nothing to do with survival and everything to do with the crisis tearing the country apart.

To protect the people she never expected to love, Grace will have to do the one thing she swore she'd never do again: trust someone enough to let them stay.