|This article is about a/an episode in Kamen Rider Gaim.|
Rosyuo begins the invasion of the Earth by opening Cracks around the world. Kouta, Kaito, and Yoko plan an assault on the Yggdrasill tower to stop him, while Kouta also seeks out Akira. However, Mitsuzane has other plans after seeing Mai, again.
Following the destruction of the missiles, Rosyuo allows Takatora to leave, claiming that it is his duty as a leader to see mankind's demise up to the end. After Redyue leaves, Gaim and Baron resume their fight with Grinsha and Gaim finishes it off with a Pine Power charged blast from the DJ Gun. At the Yggdrasill tower, Akira is held captive along with Rica and Rat, whilst in the Helheim Forest, Rosyuo decides to accelerate the end of mankind by opening cracks all over the world, with Inves appearing everywhere.
Upon learning this, Kouta decides to break into the tower to confront the Over Lords and save his sister, with Yoko and Kaito accompanying him. On the way there, they are seen by Takatora, who refrains from meeting them because he believes Yoko is still working for Ryoma. Upon arriving at the tower, they find that all entrances are being guarded by the Inves and they cannot seem to find a secure route inside. Kouta decides to ask for Mitsuzane's help; both Kaito and Yoko attempt to have him realize that Mitsuzane intends to betray him, but he refuses to listen.
Back in the tower, Rica and Rat are brought to Mitsuzane, who has arranged for them to be released, and reveals that he has made a deal with the Over Lords, in exchange for having those chosen by him spared. While Redyue turns on the machine she created to revive the queen, Mai looks for food just as Mitsuzane appears before her. When she learns of the pact he has made with the Over Lords, she refuses to join his side, claiming that unlike him, Kouta has never given up hope and that is why she supports him instead.
In the tower, Rica and Rat attempt to break Akira free from the machine when Redyue appears. With Kouta by himself at Drupers after Yoko and Kaito leave, Takatora decides to finally meet him in person, but Mitsuzane contacts Kouta first. Upon revealing the truth to Kouta, Mitsuzane transforms into Zangetsu Shin in order to kill him, and Kouta transforms into Gaim to fight back, with a horrified Takatora watching the scene from afar.
- Kouta Kazuraba (葛葉 紘汰 Kazuraba Kōta): Gaku Sano (佐野 岳 Sano Gaku)
- Kaito Kumon (駆紋 戒斗 Kumon Kaito): Yutaka Kobayashi (小林 豊 Kobayashi Yutaka)
- Mitsuzane Kureshima (呉島 光実 Kureshima Mitsuzane): Mahiro Takasugi (高杉 真宙 Takasugi Mahiro)
- Mai Takatsukasa (高司 舞 Takatsukasa Mai): Yuumi Shida (志田 友美 Shida Yuumi)
- Takatora Kureshima (呉島 貴虎 Kureshima Takatora): Yuki Kubota (久保田 悠来 Kubota Yūki)
- Rica (リカ Rika): MIINA
- Rat (ラット Ratto): Ren Ozawa (小澤 廉 Ozawa Ren)
- Chucky (チャッキー Chakkī): KANON
- Zack (ザック Zakku): Gaku Matsuda (松田 岳 Matsuda Gaku)
- Peko (ペコ Peko): Saku Momose (百瀬 朔 Momose Saku)
- Yoko Minato (湊 耀子 Minato Yōko): Minami Tsukui (佃井 皆美 Tsukui Minami)
- Akira Kazuraba (葛葉 晶 Kazuraba Akira): Rika Izumi (泉 里香 Izumi Rika)
- Kiyojiro Bando (阪東 清治郎 Bandō Kiyojirō): Tomohisa Yuge (弓削 智久 Yuge Tomohisa)
- Redyue (レデュエ Redeyue, Voice): Kenjiro Tsuda (津田 健次郎 Tsuda Kenjirō)
- Rosyuo (ロシュオ Roshuo, Voice): Jōji Nakata (中田 譲治 Nakata Jōji)
- Sengoku Driver Equipment Voice (戦極ドライバー各種アイテム音声 Sengoku Doraibā Kanren Aitemu Onsei): Seiji Hiratoko (平床 政治 Hiratoko Seiji)
- Genesis Driver Equipment Voice (ゲネシスドライバー各種アイテム音声 Geneshisu Doraibā Kanren Aitemu Onsei): Shin-ichiro Miki (三木 眞一郎 Miki Shinichirō)
- Narration (ナレーション Narēshon): Hōchū Ōtsuka (大塚 芳忠 Ōtsuka Hōchū)
- Grinsha (グリンシャ Gurinsha, Voice): Yuki Anai (穴井 勇輝 Anai Yūki)
- TV Announcer: Kenichi Miyamoto (宮本 賢一 Miyamoto Kenichi)
- Lock Used:
- Kachidoki, Kiwami, Pine (in DJ Gun), Orange
- Lemon Energy, Banana
- Zangetsu Shin:
- Melon Energy
- Peach Energy
- Arms Change:
- Weapons summoned in Kiwami Arms:
- As part of Super Hero Time, this episode aired alongside Ressha Sentai ToQger episode 18, Station 18: And What Do We Call You?.
- Viewership: 6.9%
- Closing Screen Lockseed Collection:
- This is the first time Kouta has called Mitsuzane by his real name on-screen.
- It is revealed that while in Kiwami Arms, Gaim can remove his cape.
- This is the only time that this has happened.
- First appearance of the Kiwi Gekirin since the end of the Beat Rider saga.
- It is also the first time Gaim summons the Kiwi Gekirin while in Kiwami Arms.
- It is also the first episode where Gaim does not summon the Musou Saber while in Kiwami Arms since acquiring the form.
- It is also the first episode where Gaim does not summon the Mango Punisher while in Kiwami Arms since episode 33.
- First appearance of Baron using the Sengoku Driver to transform into Banana Arms since episode 29.
- The official internet release of Gaim in Mainland China removed the scene that the Helheim Forest covering China's Tiananmen gate.