After the abduction and assumed death of Mackenzie Allen Phillip's youngest daughter, Missy, Mack receives a letter and has the suspicion it's from God asking him to return to The Shack where Missy may have been murdered. After contemplating it, he leaves his home to go to The Shack for the first time since Missy's accident and encounters what will change his life forever.
The story follows Boris, a charismatic tour guide who unexpectedly reunites with his estranged father Julián. Their tense and emotional encounters explore past wounds and the possibility of forgiveness.