The Republic of San Magnolia fights a safe humane war using drones. In reality, however, the drones are piloted by humans called 86s, who are called “pigs” and considered less than human.

As Lena lives a life of safety and comfort inside the walls of her city, the 86ers fight a terrible battle against an unstoppable and inhuman enemy.

Lena finds herself growing closer to the Spearhead squadron, or so she thinks. But a deadly battle drastically changes her perspective.

Spearhead Squadron comes to the end of their long road, and a new journey begins for Lena...

The members of Spearhead are given a brief respite from the war. But is it alright for them to enjoy themselves when so many have fallen?

The team prepares for a final suicide mission against "Morpho," a massive railgun Legion capable of single-handedly turning the tide of the battle.

The members of Nordlicht drop out one by one in the face of the Legion's onslaught, and Shin is left to face the Morpho alone.