Abducted by modern-day pirates and declared dead by his company, businessman Rokuro Okajima joins his captors on their ship, the Black Lagoon.

Rock devises a plan to destroy the gunship that seems to have trapped the Black Lagoon. Meanwhile, the Lagoon Company accepts Rock as a new member.

After finding the painting on the sunken sub, Rock and Revy argue over looking for more loot while the neo-Nazis' own divers approach the wreck.

The Black Lagoon crew must deliver a young hostage to a Colombian cartel, but Dutch has a crisis of conscience when he learns the boy's identity.

The Black Lagoon crew discovers too late that Roberta is a formidable opponent with a price on her head, as they attempt to flee with Garcia.

After Rock and Chang trace the twins' origins to Romania, they become engaged in a deadly game of cat-and-mouse with the lethal kids.