Oak Island metal detection expert, Gary Drayton joins a relative of Butch Cassidy on a treasure hunt to the legendary robber's roost and unearths a piece of outlaw treasure history.

After personally investing in a treasure hunt off the coast of Florida, Marty Lagina and Craig Tester are thrilled when their search uncovers rare and historical artifacts. But the duo must quickly come to terms with the complicated world of treasure ownership.

The Laginas are astounded to learn that on a trip to Arizona, Gary Drayton may have gotten to the bottom of one the biggest treasure mysteries of all time, one that has resulted in countless deaths and disappearance for those obsessed with finding it.

Rick and Marty's good friend and world class wreck diver, John Chatterton, heads south to search for a never recovered Spanish ship off the coast of Florida, and Gary Drayton shares with the brothers his most compelling, and valuable, find ever.