A group of powerful foes known as "sirens" have emerged unexpectedly from the sea, prompting the formation of a naval force called azure lane to combat them. although their initial attack was halted by warships, it's clear that the individuals who created this organization hold different beliefs and values. the narrative centers on young women battling new adversaries while navigating internal conflicts within each camp.
The final two episodes were originally scheduled to broadcast on December 19 and December 26, 2019, but were delayed to March 13 and March 20, 2020, respectively.