When Okajima Rokuro (aka Rock) visits Southeast Asia carrying a top secret disk, he is kidnapped by pirates riding in the torpedo boat, Black Lagoon. Although he thought he would be rescued soon, the company actually abandons him, and sends mercenaries to retrieve the secret disk. He narrowly escapes with his life, but has nowhere to go. He gives up his name and past, and resolves to live as a member of the Black Lagoon.

[Source: AnimeNfo]

Okajima Rokuro — now known almost exclusively as Rock — was once a typical, put-upon Japanese businessman. Then, on a routine business trip, he was kidnapped and ransomed by the Lagoon Company — a band of mercenary pirates operating out of the crime-riddled city of Roanapur. Abandoned by his bosses, he joined the Lagoon Company. Now he must try and stay afloat amongst the ever-shifting politics of the criminal underworld, while simultaneously avoiding death at the hands of his quick-tempered, gun-toting co-worker, 'Two Hand' Revy.

[Source: Anime News Network]

Special omake episodes from the Blu-Ray releases, showing the heroines and foes in funny, uncommon situations.

Roberta, the terrorist-turned-maid that made her appearence in the first season of Black Lagoon, returns in this five-episode OVA series—and this time, all bets are off!

Roberta's benefactor, the patriarch of the Lovelace clan, is murdered during a political rally. The assassin's trail soon leads back to Roanapur—so now she has returned on a mission of vengeance! However, close behind her is the new patriarch, Garcia, as well as Roberta's apprentice (and maid), Fabiola Iglesias. As the body count of Roberta's bloody rampage mounts, forces from within the corrupt island (which includes the Lagoon Company), as well as overseas converge on what threatens to escalate into all-out war!