That which freezes this universe— The moment of confrontation with the "Witch of Uralia" draws near. The true identity of the "witch"—the hidden intermediate supply base, Digabras, lurking in the dark cosmos. What is the connection between Dezarium and the "Witch of Uralia"? Within the absolute disadvantage of a "frozen universe," the Yamato and Garmillas-Gamilas allied fleet is forced into a desperate struggle against a massive fortress that even renders the Wave Motion Gun ineffective. Amidst this, Alfon appears once more before Kodai. Guided by a bond of snow, yet believing in different futures, what truth of Digabras do these two incompatible individuals witness—!? Meanwhile, on Earth, which has fallen into Mother Dezarium's trap, people are willingly accepting "Dezarium-ization" of their own volition. There is no more time to spare. In search of the answers to all mysteries— A shocking conclusion awaits the Yamato as it plunges into an unknown dimension!!