Grotesque, strong enemy called Siren has suddenly appeared from the sea. In order to fight against them, a group of army Azure Lane has formed. They were successful in stopping the attack from Siren for a moment using warships, the different ideals from the people who formed it has shown. The story is about girls fight the strong enemies that they never face while dealing with the trouble in each camp.

Animation of the Azur Lane 4-koma manga.

Javelin, Z23, Laffey, and Ayanami help Sirius practice as a maid for an upcoming party, while South Dakota and Massachusetts practice the piano.