The great forgetting

History teacher Jack Felter returns to his hometown in Ohio to care for his father who has dementia and learns that Tony, his former best friend who ran off with Jack's girlfriend, is missing. Tony was a psychologist and his last patient, Cole, teams up with Jack to find Tony. The unlikely pair embarks on a journey that takes them to an island in the Pacific where they learn about Malaysia Airlines Flight 370 and a program known as the Great Forgetting.