In 1962, three 12-year-old children in a small-town, communist-phobic culture form an investigative unit into a bizarre aerial phenomenon, a military hospital with secrets, men in black, and an unsolved lethal explosion.
Beth tries to connect with her son, Arthur, who has built a metal detector with his friends to help them investigate the mysteries in Granite Flats. A big city reporter begins asking questions around town.
Friendships are tested after a failed class project, Beth investigates Frank's strange behavior, and John struggles to balance his family and his duties as police chief.