Seventeen years later, Lydia Troyer is far from concerned with the energy crisis. Growing up in the isolated community of Hemlock Hollow, life hasn't changed much since 1698 when her Amish ancestors came to America. She milks her cow by hand, makes fresh bread every morning, and hopes to be courted by Jeremiah, the boy who's been her best friend since she could walk. But when Lydia's father has a stroke and is taken to the outside world for medical treatment, Lydia and Jeremiah leave Hemlock Hollow. An ordinary light switch thrusts Lydia into a new world where energy is a coveted commodity and her own personal history makes her the most sought-after weapon on the planet.