Damn it! Who would dare!?I know that! But still...!The ocean...
Our unknown Caribbean ocean of the 18th century.
The two who were transferred here from a different world are the ship girls: Kongou and Kirishima.
However, they were surrounded by a fleet of monster ships created by making full use of the Abyssal's technology.
Now, the naval battle none has ever seen before is about to begin...
One week earlier!Let it go, sugar.What!?One of our ships is stolen!It's just one small ship that has yet to be re-modified...It might just return to us soon...... along with some interesting guests...
Following the only lead that might give them a chance to return to their original world, the two join forces with the enemy, Isolated Water Princess, and follow the clues to the headquarter of the pirate "Black Beard"