This, the second collection of episodes from the Blue Submarine No. 6 anime series, follows the crew of No. 6 in their battles against the evil Zorndyke in a future world where flooding has covered most of the earth. While back at the base for maintenance, Tetsu's conflicts with Mayumi threaten to reach the breaking point, until Zorndyke's appearance on a televised conference on warfare leads informed observers (including the crew of No. 6) to expect him to mount a full-scale attack on the landlocked humans. The American release of Blue Submarine: Volume 2 - Pilots is available with the original Japanese soundtrack (accompanied by English subtitles) and with a dubbed English audio track.