An unexpected rescuer takes the Pogues from a remote island to Barbados, where they encounter a powerful treasure hunter with his own agenda.

As her friends mount a rescue attempt, Kiara agrees to an uneasy truce with Rafe. A familiar sound grabs John B's attention.

Big John and John B pick up where they left off — for better or worse. Cleo and Pope form a new club. Rafe reconnects with Ward.

Secrets threaten to drive a wedge between John B and his friends. Sarah revisits a past life. Pope reaches a breaking point.

With Singh on the move, John B and JJ scramble to catch him. Pope makes a breakthrough. Sarah questions where her loyalties lie.

Rafe lays his cards on the table and Sarah calls in two favors. JJ's unorthodox plan to get to South America lands John B in hot water.

With their ride to Orinoco waiting on the tarmac, Kiara and JJ run into several complications. Rafe has a change of heart.

The Pogues' search for El Dorado brings them deep into the jungle, where John B and Sarah face the ultimate test of their courage and family bonds.