Yuta and his class go on a field trip into the mountains. During the trip, Akane questions Yuta about his amnesia and tricks him into admitting he is Gridman. She then summons a massive mountain-sized kaiju she created prior to draw Gridman out, but Yuta cannot transform as he has no access to Junk. The Gridman Alliance managed to contact the NGJHS, who purchase Junk from Rikka's mother and reach Yuta's location to allow him to become Gridman...