An elite team of treasure hunters search for clues to a vast fortune they believe is hidden on Brazil's deadly Snake Island. But team tensions, mechanical problems and the threat of modern-day pirates could derail the expedition as it begins.

Promising clues off the coast motivate the team to gear up for their first venture onto the deadly Snake Island itself, where they'll face triple digit heat, cave-ins, and their first terrifying encounter with one of the world's deadliest vipers.

A jaw-dropping discovery on the island's perimeter fires up the team, but as excitement builds, so do tensions between team members. And as caution gets thrown to the wind, a series of dangerous encounters threatens to end the mission, and people's lives.

A dangerous run-in leads the team to an astounding new clue, but a communications breakdown leaves them in the dark about an approaching storm, and Cappy fears he'll have to strand the land team as their window to find the treasure is about to slam shut.