Mt. Fuji great straight descent operation

Synopsis

The Fuji observatory is attacked by the Iron Cross Corps. Sayaka and Shiro, who had come up for a ski trip, try to head down the mountain to warn the lab, but they're ambushed by the Iron Cross Corps along the way and tumble off a cliff. Mazinger Z, going to the rescue, gets stuck in the heavy snow. Count Brocken seizes the chance to attack the now-empty lab with the Mechanical Beast Brogn G3. There's only one way to get Mazinger Z off the mountain — strap him into giant skis and send him straight down to the base!