The series follows the residents of Arcadia, Missouri, whose lives are upended when their loved ones return from the dead, unaged since their deaths. Among the returned is Jacob Langston, an eight-year-old boy who drowned 32 years earlier. Having somehow been found alive in China, he is brought back to America by an immigration agent. His surprise return inspires the local sheriff, whose wife drowned trying to rescue Jacob, to learn more about this mystery.