Three years after their adventure, Lafiel becomes captain on the brand new assault ship Basroil and Jinto finishes his training to become a supply officer and joins Lafiel's crew. They set out to join a large fleet with the mission to defend the strategically important Aptic Gate from a force 15 times larger than their own. And to make matters worse, their new fleet commander is from the Bebous family, a family notorious for their "Spectacular Insanity".

[from AniDB]