If not defeating the mutant Simeon fused with Kirschwasser, the second Myrcia will be destroyed. For Shion's distress, KOS-MOS proposes a strategy to rescue Kirsch. KOS-MOS that responds to Shion's trust and succeeds in its operations. But the celestial car began to plunge into the second Miltia atmosphere. Kirsch remains in the heavenly car and disassembles the plant. The ship Elsa, which Shion and others are riding on, is about to burn out in the atmosphere, but KOS-MOS saves herself and saves the crisis! Can she save it by sacrificing herself before it's too late?