Young lawyer Kim MacLean is determined to believe in second chances, so when a sea of butterflies descends, flowing around her as she leaves Tulsa and an abusive marriage behind, she takes it as a sign that her new path is off to a good start. And not only for herself, but for her young son, happily kicking his heels in the back seat. She and her new husband, John, ultimately settle in Seattle, buying a century-old farmhouse behind her sister Karen's modern subdivision. The two women raise their growing families and support each other in their respective careers. When tragedy strikes Kim's life a second time, upending all she thought to be true, she draws on the wisdom of the women in her family-her mother, her sister, and even her own young teenage daughter-as she struggles to make peace with the universe of lost answers and choose the right path forward.