His brother snatches the SSS-grade Mecha Core, unaware it's crisis bait. Older brother Corbin Linden sees danger, chooses F-grade scrap Mecha. Exiled by family, he meets three abandoned teammates. Relying on the F-grade Mecha with a supreme treasure, they form the strongest squad. When disaster strikes, the SSS Core brother is desperate, and the family collapses.
