Itâ€™s been a year since Billie Flanaganâ€”a beautiful, charismatic Berkeley mom with an enviable lifeâ€”went on a solo hike in Desolation Wilderness and vanished from the trail. No bodyâ€”only a hiking bootâ€”has ever been found. Billieâ€™s husband and teenage daughter cope with her death the best they can: Jonathan drinks, Olive grows remote.
But then Olive starts having waking dreamsâ€”or are they hallucinations?â€”that her mother is still alive. Jonathan worries about Oliveâ€™s emotional stability, until he starts unearthing secrets from Billieâ€™s past that bring into question everything he thought he knew about his wife. Together, Olive and Jonathan embark on a quest for the truthâ€”about Billie, their family, and the stories we tell ourselves about the people we love.