Treasure hunters Rick and Marty Lagina, the stars of History's "The Curse of Oak Island," learn of a new mystery that may even rival Oak Island's. Michigan native Kevin Dykstra is obsessed with a deathbed confession made by a lighthouse keeper in the 1890s about a national treasure dating back to the Civil War. The story goes that Union soldiers tracked down Confederate president Jefferson Davis in 1865 and confiscated his gold. The stolen loot was smuggled north some years later but ended up in Lake Michigan, where Dykstra believes it still remains. His quest to prove it ultimately takes him and his team to the bottom of Lake Michigan.
Alex Lagina joins Kevin Dykstra and his team back on the lake, and new evidence suggests they may have found the gold.
A diving operation produces potential evidence of some $140 million in gold at the bottom of Lake Michigan, while an informant shares a 50-year-old secret that shocks and energizes the team.
The team uncovers evidence of a web of tunnels connecting the homes of key players in Kevin's theory, offering possible proof that members of the 4th Michigan Cavalry returned home with millions in Confederate gold.
Excitement builds when Kevin and the team uncover evidence on the property of a Civil War general that could convince Marty their theory is legitimate.
A century old family's secret lures Kevin and the team back to Georgia where new finds suggest there's more Civil War gold to be discovered.
Shocking new evidence suggests the plot to steal 140 million dollars in Confederate gold may have been tied to the highest office in the land, and dangerous waters threaten the team’s attempt to investigate a sunken boxcar.
A new theory suggests the theft of 140 million dollars in Confederate gold funded one of the most nefarious crimes in the history of the United States.
Excitement soars when Kevin finally holds gold brought home from the arrest of Jefferson Davis, convincing him that his theory is true.
For Kevin Dykstra and his team, an 8-year quest to find a legendary boxcar at the bottom of Lake Michigan has now become a battle against nature itself.
Marty Lagina joins Kevin and his team as they battle the elements and take one final shot at finding 140 million dollars of Confederate gold at the bottom of Lake Michigan.