Brothers Rick and Marty Lagina examine an abandoned shaft called 10-X; what they find gives them reason to believe that the stories of something buried on the island may very well be true.

When the team finds something very unusual at Smith's Cove, Rick and Marty Lagina believe they've made a huge breakthrough in unlocking Oak Island's secrets

As Rick and Marty Lagina start work to drain a mysterious swamp, they are visited by a woman who lost her father and brother to a tragic accident on Oak Island that gave rise to rumors of a deadly curse.