Description：Once upon a time, the mysterious enemy "Siren" from the ocean launched a fierce attack on humans. The girls of "Azur Lane" fought bravely with the enemy with their iron will, and finally defeated their opponents and protected humanity. However, as time passed, the internal differences in the Azur Lane gradually split due to differences in concepts, and an opposing camp called the "Red Axis" emerged. The strongest hero Enterprise (voiced by Yui Ishikawa), known as the "Gray Ghost", Rafi (voiced by Maria Naganawa), who is confused every day but unexpectedly useful at critical moments, Bumblebee (voiced by Nozomi Yamamoto), who is young but mature and considerate, and Hamman (voiced by Asuka Ito), who has a strong personality but a kind heart. In the face of the turbulent situation, what kind of story will happen when these girls are pushed onto the battlefield again?