The series was originally planned to be 20+ episodes but was cut short due to unknown circumstances. These specials released on the 7th DVD volume continue the story.

The once famous and well respected scientist Zorndyke has bred a new genre of living being, one that thrives on the oceans and lives to destroy humans. Zorndyke believes it is time that the humans were relieved of their rule of the earth. It is up to Blue Submarine No. 6 and the rest of the Blue fleet to put an end to Zorndyke's madness and creations. (Source: ANN)

This episode contains three stories. The first story, "Toki no Asase" (Shoals of Time), will center on Nero and Vanno persuading Frate to skip mass with them and see the circus. The second story, "Subete no Kinou" (Yesterday Before Everything), will focus on Ganzo, as he meets a young man named Vincente at a bar, and asks Ganzo to do something for him. The third story, "Ashita, Mata Ashita" (Tomorrow, and then Tomorrow), is set after Nero and Avilio defeat Mad Mack and are on the way back to Lawless. Nero suffers from fever dreams, and Avilio nurses him back to health. (Source: ANN)

Ever since the fall of the DARK organization, Jiro has been wandering everywhere and wondering if he would ever see Mitsuko again or not. During his journey Jiro meets a beautiful girl named Rieko who is protecting Akira, a little boy from the evil Professor Gill. Ironicly, he's the son of Professor Gill, but he is also the key to Gill’s menacing secret weapon and his plans to conquer the world. (Source: ANN)