On the way to escort the company's confidential documents, Rising Sun Heavy Industries' ordinary employee Okajima Ryoro (voiced by Namikawa Daisuke) was attacked and kidnapped by a mysterious organization called the Black Lagoon Chamber of Commerce, and the confidential documents were also taken away. In order to ensure that the secrets were not leaked, Rising Sun Heavy Industries took an erasure operation - including the documents and Okajima Ryoro himself. After learning that he was abandoned by the company, Okajima decided to find a way out for himself in his own way. Okajima applied for membership in the Black Lagoon Chamber of Commerce and proved his ability through practical actions, and then started a new life under the name of "Locke". Surrounded by these mysterious characters, the shrewd and calm leader Dutch (voiced by Isobe Tsutomu), the strong-willed double-shooter Vera (voiced by Toyoguchi Megumi), and the cheerful and indifferent mechanic Benny (voiced by Hiroaki Hirata), Locke gradually found the feeling of companionship, and at the same time, a road full of crises and adventures also unfolded in front of him.