Martha Beckstead just started a new job, but today will be her last day. She thinks it's because her husband ordered her to quit and stay home with their two young daughters—their fundamentalist religion discourages women working outside the home. What neither of them knows is that today the long-feared Cascadia Subduction Zone earthquake will devastate the entire west coast from Canada to California. Martha will be a hundred miles from home when the bridges fall, the roads buckle, and the mountainsides collapse in a rush of mud and stone. She’ll be alone as she survives the harrowing journey through the Oregon wilderness to discover if her family has survived the quake and the massive coastal tsunami. The trek will threaten her life, erode her belief in the god she’s always known, and transform her into someone she never expected.