John H. Groberg, a middle-class kid from Idaho Falls, becomes a Church of Jesus Christ of Latter-Day Saint missionary in the remote Tongan island kingdom during the 1950s. He leaves behind his loving family and Jean, his true love. Through letters, John shares his adventures with "the girl back home", and her letters boost his spirits during difficult times.

The Other Side of Heaven
A young boy from Idaho Falls trades in his rural upbringing for a life of missionary work in the vibrant Tongan islands, navigating the complexities of a new era.