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.
青の6号 (Mùa 1)

Blues (Tập 1)
Biên kịch: Hiroshi Yamaguchi
Ngày phát sóng: 1998-10-25
Thời lượng: 30 min
Tổng quan: Humanity is plagued with attacks by a race of sea mutants dedicated to eradicating mankind. Our last hope is the Blue Submarine No. 6 and her crew, made up of the best personnel available as they fight for the fate of all mankind.

Pilots (Tập 2)
Biên kịch: Hiroshi Yamaguchi
Ngày phát sóng: 1999-02-25
Thời lượng: 30 min
Tổng quan: After surviving another undersea battle with Zorndyke’s forces, the crew of Blue Submarine No. 6 returns to base for repairs. While on base, Tetsu continues to display his trademark lack of concern for authority and continues to annoy Mayumi.

Hearts (Tập 3)
Biên kịch: Hiroshi Yamaguchi
Ngày phát sóng: 1999-08-25
Thời lượng: 30 min
Tổng quan: Tetsu drifts in the open sea. As his life flashes before him, he begins to black out. But when he comes to, he finds himself resting on the hull of a half-sunken ship. His savior is one of the enemies.

Minasoko (Tập 4)
Biên kịch: Hiroshi Yamaguchi
Ngày phát sóng: 2000-03-25
Thời lượng: 30 min
Tổng quan: The poles are shifting and most of the Earth’s land is now underwater! The scientist Zorndyke has created a race of beast people to challenge the humans for global supremacy. But who is the real enemy — Zorndyke or humanity itself?
