Countless Coalition Soldiers, Sailors, Aviators, and other allies, prepared for the final battle. And they must win, or the Solaris Earth will fall. And the Heroes will lose.

One is Hawaii. Taken by the SIRENs, now both the US Navy, Coalition Marine Corps, and Shipgirls got ready to finish off the SIRENs in this World.

Two is Shanghai. Full of Honkais, but was slowly pushed back, and they're now bringing the Will of the Honkai to this World. And the Valkyries are intending to prevent it from happening. By destroying the Portal or sending the Will of the Honkai to a Black Hole.

Three is Kaechon. The Replacers are attempting to unleash the C.O. into this World along with the Qliphoth Game. The Administration, along with the Coalition Forces won't let that happen.

Four is Munich. Paradeus and KCCO are attempting to cause an ELID Outbreak, by bringing a Collapse Bomb to trick the Solaris Humans that it's an accident. But G&K along with Sangvis Ferri knew better, and a truce was made between the two... A Race Against the Clock begins.

Five is Moscow. The Ursus Army is planning to stage an outbreak to sow distrust and make them legitimate before the Russians' eyes. Both Rhode Island and Reunion let their differences aside, and together... They now fight to defend the Solaris Earth.

And finally, Six is Makemake. A Dwarf planet, with the Hydranian residing in there. Only Kevin and his Ragtag of Operatives, 1st Gen Space Rangers, and 1st Gen Space Marines destroy the Alien Base. Ending the war.

Six Battles.

Only one Victor.