Abyssal forces have a stranglehold on mankind, and it's taking everything the combined naval and kanmusu forces of the world can to just to break even. USS New Jersey finds herself thrust into the middle of this world, but how much difference can one battleship do? Are you really waiting for an answer? The answer is a LOT. Seriously. She's a frigging BATTLESHIP.

The Abyssal War rages on, with Kanmusu worldwide holding the line... except for the American shipgirls, conspicuous by their absence, when the US Navy and the world needs them most. Yvonne Swanson, US Navy intelligence officer, sets forth for Yokosuka Naval Base to find answers, both about the ship girls and the Abyssals... but she may not like what she finds...