The 8th Independent Unit finally makes it back to a nearby castle before being told by their superiors they will have to move again to stop the Ingelmian advance and cover the retreat of friendly forces. Commander Samonji devises a plan to collapse the "Gates of No Retreat" by planting many explosives along the canyon walls, while his unit will buy time for Ardanas forces to evacuate the area. Ingelmia sends out a forward team of robots to take down the routing Ardanas forces, led by the skilled Schlein Richthofen...