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

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.

Rock tries to force Yukio out of a life of crime, but events beyond his control may cause his well-laid plans for her future to spin out of control.