Cara is on the cusp of adventure. Unlike her best friends, she doesn't want to go to college, she wants different kinds of challenges. And anyway, home just doesn't fit anymore. She is growing distant from her friends and hasn't spoken to her father in eons. To make matters worse, her ex-boyfriend and fellow climber, Nat, has popped back into town after breaking up with her over text. So it's the perfect time to leave, and she has big plans for a gap year to rock-climb in Patagonia. But when Cara hears that her father is actually missing, things change. While trying to track him down, she discovers a trail of clues centering around the history and life of the legendary mountaineer, outdoorsman, author, and all-around climber (or "dirtbag"), Beckett Friedrichs. And unfortunately, the only person who knows enough about Friedrichs to make sense of any of this is Nat. Their search for Cara's father will lead into the Cascade Mountains, up a harrowing rock face, and through time as Nat and Cara explore the history of World War II with the impact of Pearl Harbor and its Japanese Incarceration Camps, Cara's family, and each other.