This film is a tribute to legendary cave explorer Sheck Exley prepared for the 50th anniversary of his story "Lost in the Slough", one of Sheck's most miraculous dives. Through recreation and investigation, we rolled back the mysteries and uncovered details missing for 50 years that put this story on par with any classical tale of yore. In this case, a teenage boy takes on an underwater labyrinth completely devoid of light and air. The cave teaches him the discipline of the guideline by hiding the real exit while providing him with a false one that sends him into a primal struggle for survival. In the end, he escapes through dogged determination but also because he had unconsciously reserved enough air to find a new exit.