Humanity last space battleship. [Azur Lane, Ocean Of Stars]

The last of Humanity's space battleships, the Yamato, will once again protect its people. However, this time, they find themselves in a different universe, where they face a new enemy: the Sirens, Humanity's long-time foes.

After countless defeats, the Sirens retreated to their home planet, allowing Humanity to rebuild and prosper. They became an interstellar civilization, colonizing countless planets with the help of the Sirens' abandoned technology. Peace finally reigned.

But in 2199, the Sirens returned, stronger and more numerous than ever. The fate of Humanity now rests in the hands of the Azur Lane Space Force (ALSF), who will fight tooth and nail to prevent their extinction.