Even in a home far away from home trouble seems to follow the shipgirls around like a lost puppy. Ever since taking shelter in Germany the girls thought they would get used to their new surroundings, that is until something happens to one of them. With the Royal Navy beginning to rebuild itself and the main enemy looming over everything, the girls must make one final push if they're ever going to free their world from the terror of the Sirens.

A few months have passed since the death of Jack, the valiant commander of the Royal Navy. The fleet that he left behind has only grown stronger in his absence, even without the presence of a replacement commander. Ships from the Eagle Union and the Sakura Empire visit to come pay their respects for the fallen commander and stick around for a few weeks, but all four factions will be in for a shock when they discover what goes on behind the scenes...

Jack had seen more than his fair share of battles as a mighty commander for the Royal Navy, and the same could be said for his fleet. After dealing with the Sirens for the umpteenth time the commander receives notice that some Ironblood ships were stopping by to pay a friendly visit, and its then that he realizes that some of the girls are acting... Friendlier than normal around him...