Upon learning of the treachery of former Azur Lane members Sakura Empire and Iron Blood, the present members of the alliance reunite for battle.

Reinforcements hastily attempt to fix the damage wrought by the Sakura Empire's surprise attack on the Azur Lane base.

Belfast's arrival sends the Red Axis running; the focus shifts to Enterprise, whose critical assistance in the battle has left her facing serious problems.

The Red Axis fleet arrive in Sakura Empire celebrating their successful strike against Azur Lane forces. Akagi checks the progress of her grand plans while Ayanami meets with her peers and reflects on the previous battles.

As the Red Axis fleet searches for them, Sheffield and Edinburgh hunker down on an island and must hold out until reinforcements arrive.

Azur Lane gains intel on Akagi's Black Cube after performing the rescue mission; forces on both sides regroup.