Watch full Shirogane no Ishi: Argevollen Episode 3 English Subbed online for free in HD. Full HD Shirogane no Ishi: Argevollen Episode 3 English sub streaming online. One Man Army. 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 lots of 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. While covering for his allies, Tokimune disobeys orders again and breaks formation to save friendly units trapped within the Gates of No Retreat, but shortly after bailing them out, he finds himself in a duel with Richthofen’s robot who uses his experience to match Argevollen’s better equipment. Samonji finally orders the Gates sealed, but manages to bail Tokimune out at the last second. The Ingelmia Army is stopped, but Richthofen is shown having escaped the blast as well.