In this thrilling season finale, the Lagina brothers and their team discover a previously overlooked hatch buried beneath the ground. On further examination, the guys realise they may finally be within touching distant of the fabled treasure of Oak Island. Rick, Marty, and the team return to Oak Island and immediately uncover evidence of a mysterious tunnel in the Money Pit. The Fellowship gets a clear look at an underground structure. Are they closer than ever to solving the 227-year-old mystery?