When the Deague unleash a destructive surprise attack on her school, Sara Werec is surprised to learn that the head of the enemy assault is no anonymous villain.

Enrolled at a new school, Sara struggles to master the Gambee mechs and wrestles with the disdain of her colleagues.

When a Deague attack interrupts an important exam, Sara watches those around her get torn apart -- but instead of sitting around helplessly, she concocts a plan.