Nate and Sam hunt for the treasure of pirate Henry Avery, who plundered a fortune during the 1695 Gunsway heist. Alongside Rafe, the Drake brothers infiltrate a Panamanian jail to access the former cell of Avery's first mate, where Nate discovers a hollow St. Dismas idol. When the prison warden who aided them demands a cut, Rafe impulsively kills him, triggering a frantic escape. Nate and Rafe successfully escape, but Sam is shot by guards and presumed dead...