Eight candidates for a highly desirable corporate job are locked together in an exam room and given a final test with just one seemingly simple question. However, it doesn't take long for confusion to ensue and tensions to unravel.

After the abduction and presumed death of Mackenzie Allen Phillips' youngest daughter, Missy, Mack receives a letter and suspects it is 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 abduction and an encounter that will change his life forever.