Hikayu Hoshikawa, a character from the dating sim video game Starry Sky Milky Way, appears in front of the group. Hikayu doesn't possess any abilities for battle but is still required to participate in the Elimination Chamber Festival since she's a Creation. Oonishi, Hikayu's creator, comes up with an idea to help her. Meanwhile, a new Creation joins Altair's side...

The battle over the fate of the real world and the fate of the story worlds finally begins! Selesia is able to get back into Vogelchevalier again after winning the acceptance of the audience, and faces off against Altair. However, her new powers don't work against Altair, and she struggles in the battle. Meanwhile, Blitz goes to pay someone a visit to tie up some loose ends.

After losing Alicetaria and Selesia, Meteora and the others try to trap Altair within the Bird Cage, but the audience sympathizes with Altair and transforms the Bird Cage into a stage for amplifying Altair's powers! Meteora tries to turn the tables on her by bringing out their secret weapon: Sirius, a Creation with the same appearance and the same powers as Altair!