In the final battle deciding the fate of humanity as the Azur Lane faction and the Crimson Axis faction finally settled their differences and sortied themselves the greatest fleet consisting Sakura Empire's IJN Kaga, Akagi, Nagato, Takao, Atago and Ayanami along with Iron Blood's KMS Bismarck, Tirpitz, Roon, Z23, Admiral Hipper and Prinz Eugen supported by the Royal Navy's KMS Hood, Queen Elizabeth, and Prince of Wales, Belfast, Sheffield and Javelin with Eagle Union's USS Enterprise, Yorktown, Vestal, Cleveland, Laffey and San Diego.
The most ambitious coalition fleet consisting of the best ships in their field and were most experienced in dealing with the Enemy of humanity who called themselves the 'Siren'. Together, they were lead under a single banner commanded by the most brilliant Commander who brought the war to the final stage.
Yet, as victory became so close, the cornered Empress of the Sirens made one last ditch effort tampered with the mysterious black cube that sent struck the entire coalition fleet with a spiraling black portal that suck everyone including the leading commander into a fate unknown.
An unknown time had passed passed before the whole fleet awoken in a strange ocean they felt unfamiliar. With different stars telling they were in a different place and radio transmissions all going silent, the fleet and the commander felt something was wrong and was even more so when pirates sailing ships from the 18th century ambushed them all of a sudden. Attacking them with flying lizards and magic fireballs.
How will the commander and his coalition fleet deal with the undeniable fact that they've been transported in a world of fantasy?