With the golden power of his red form, Yusuke defeats Unidentified Lifeform #39, shark-type monster Go-Gamego-Re but the media and police department emphasize that the enormous damage caused by #39's giant explosion was due to #4's independent actions.

The TryChaser2000 is forced to finally be retired due to the metal fatigue of combining with Goram and the battle with grasshopper-type monster Go-Badaa-Ba.

Unidentified Lifeform #45, buffalo-type monster Go-Baberu-Da appears, and a massacre larger than any others so far unfolds throughout the city.

Unidentified Lifeform #45, buffalo-type monster Go-Baberu-Da is defeated, and in the brief moment of peace he's given, Ichijo heads to Mika Natsume's flute competition.

The El of Water has possessed Masumi Sekiya and it's reviled that it killed the two Akatsuki-go members from Gills' Resurrection in her body without her knowing. The El of Water has now turned its sights on Agito.

Shouichi comes face to face with the El of Water and believes no matter what he can't defeat it, becoming scared. He starts to question why he became Agito.

After being beaten by the El of Water both Gills and Agito retreat. Shouichi becomes bedridden with injuries and Ryo must protect him even though both of them known they are no match for the deadly Unknown.

One of the last remaining survivors of the Akatsuki-go incident, Koji Majima, becomes targeted by a mantis Unknown.

Thanks to Ryo Ashihara, Shoichi Tsugami escapes from the OverLord of Darkness. Shouichi begins to question what it means to be Agito now that he believes that his sister killed Mana's father.

Makoto Hikawa is released and back on duty. Unfortunately, he is still suffering from a severe concussion.

Shoichi Tsugami takes solace knowing that he is no longer Agito and that he is free from a fate that could be much like his sister's. But with Agito, Gills, and Another Agito out of commission who will save Mana when she is attacked?

Hibiki goes to Asumu to ask him for a favor but Asumu doesn�t seem to be feeling well, and is rushed to the hospital when he collapses during class! In the mountains, after being given a power boost, an Ubume Douji goes berserk, killing the Ubume and the Hime, and proceeds to hunt down other Makamou, interfering in a battle Danki was engaging in before moving on to attack Ibuki!

Asumu is suffering from appendicitis and is rushed into surgery, as his high school life comes to a halt until he heals. Hitomi runs into her cousin while Asumu meets a man who gives him some advice as he leaves the hospital, as Hibiki and Ibuki team up to track down and destroy the berserk Douji.

After being beaten up for revenge by the shoplifter he stopped several months ago, Asumu loses his normal cheerfulness. Hibiki sees this and decides to take Asumu for a forest hike while fixing his damaged drumstick. Meanwhile, Eiki is defeated by an armored Douji and Hime, so Ibuki and Todoroki are called in to avenge their fellow Oni.

After his fall where he loses his phone, Asumu blames himself and Hibiki confronts the boy about being too negative and self-conscious. Meanwhile, Ibuki and Todoroki combine their efforts and battle Douji and Hime, with Eiki joining them in the battle against the Makamou, but it escapes and makes its way toward Hibiki and Asumu�s campsite�

A mysterious forest appears out of nowhere, causing the Oni to worry about what it could mean, and the mysterious Man and Woman also seem to be concerned with the new development. Meanwhile, Asumu believes he�s ready to become Hibiki�s apprentice while Kyousuke continues to beg Hibiki for the same thing, but both boys may be disappointed in his answer�

After Akira�s attempt at transforming, the Oni return to Tachibana�s where Asumu and Kyousuke are scolded for their attempts to become Akira�s apprentices. However, the boys are firm in their resolve to begin their Oni training, troubling Hibiki. Meanwhile, Ichirou meets with the mysterious Man and Woman, who warn him of the destruction to come�

Ryotaro suddenly becomes possessed by an evil spirit who kicks out all the other Imagin and deals with threats in its own destructive way!

Ryutaros continues to cause problems to the other Imagin in holding on to Ryotaro's body, forcing them to take action in order to get their partner back.

A former suitor of Airi returns in hopes of winning her heart in the absence of the missing Yuto, leading to Yuto's younger self and even Ryutaros to respond.

As Den-O has trouble dealing with the Anthopper Imagin, Yuto contemplates the need for the final Zeronos card and the permanent damage that will occur if finally used.

Arriving in the World of Kiva, Tsukasa and company discover that the Fangires of this world have made a truce with the humans. However, when Tsukasa finds the Lion Fangire attacking a young woman, he transforms into Decade to fight him. Wataru, the King of the Fangire Race, witnesses this and becomes Kamen Rider Kiva to fight him with the aid of his Arms Monsters, forcing Decade to assume Kamen Rider Kuuga's Mighty, Titan, and Dragon Forms to counter. Yusuke manages to stop the fight, and the Swallowtail Fangire reveals that the young woman was actually a renegade Fangire. Yusuke reveals he has promised to help Wataru because he is uncomfortable with being the King.

As Tsukasa is fighting against Kaixa in another dimension, the Beetle Fangire defeats Wataru and becomes the new Fangire king, claiming Kivat. After the new King dissolves the truce, Yusuke arrives to protect Wataru before the boy runs off. After Yusuke expresses his reasons for helping the dethroned boy, Wataru takes refuge in the Hikari Studio. After being caught up on current events, Tsukasa makes his way to Castle Doran to save Yusuke as the Beetle Fangire absorbs the Arms Monsters into himself. After destroying the Swallowtail Fangire, Decade encounters the Beetle Fangire, who assumes Kiva's DoGaBaKi Form. When their fight makes its way to Yusuke and Wataru, the boy finds his courage to overcome his Fangire impulses and declares himself the King once more.

Tsukasa finds himself wearing strange clothes with another strange card as he, Natsumi, and Yusuke find themselves attacked by the Strange Demon Robot Schwarian and his Chaps as Kamen Rider Black RX battles them, with both sides believing Tsukasa to be Joe the Haze. When the Seamoon Fangire and Scorpion Imagin suddenly appear, Tsukasa becomes Decade to help RX out against the monsters with Agito's power as Schwarian runs off. After Natsumi stops RX from attacking Decade, RX takes her words to heart and sees Tsukasa as an ally.

Following Apollo Geist into another A.R. World, Decade is attacked by Kamen Rider Black until Diend arrives and summons Femme to hold him off. The next day, after learning that he is in the World of Black and seeing that he is on his own in saving Natsumi, Decade ambushes Guy as Ryuki and fights him until he uses a little girl as his hostage. When Decade takes a hit from Diend to save the child, Black watches and has second thoughts about him as Apollo Geist escapes.

Kougami asks for a share of Eiji and Ankh's Medals, while Mezool decides to use Hina's shopaholic classmate to create a new Yummy.

Hina confronts Yamano's shopping addiction when her father goes bankrupt while Ankh confronts Kougami about his share deal of the Cell Medals.

Eiji's traveler friend becomes manipulated by Uva into becoming famous as he steals others attributes; while Gotou doubts Eiji's effectiveness as OOO.

Eiji teaches a lesson to Tsukuba and Gotou about going forth to gain what is desired; while Ankh tries to figure a way to manage the flying Ageha Yummy using Gamel.

After escaping the clutches of the Yggdrasill Corporation, Kouta wonders why all three of them were able to escape so easily, knowing how Ryoma Sengoku was interested in them. Later, Mai and Chucky continue to try to convince other teams to end the Inves Game, but they instead witness an Elementary Inves robbing a jewelry store. Meanwhile, Takatora has shown Mitsuzane a horrible scene hidden within the Helheim Forest and revealed that he easily beat Kouta.

After Takatora reveals the truth about Helheim Forest to Mitsuzane, he tasks his brother with recovering Kouta's Sengoku Driver. Elsewhere, Oren and Jonouchi plan to perform the same act with their own plan in mind. Kouta later receives a phone call that tells him his sister has been kidnapped.

The Crack at Yggdrasill's lab causes more and more Cracks to appear throughout Zawame. Kouta believes the solution is to close Yggdrasill's Crack before any more Inves can attack. However, Kouta encounters Ryoma and Yoko waiting for him in Helheim Forest, ready to stop him so their plans may continue.

Now aware that he killed Yuya, Kouta loses all will to fight, and will not even seek to destroy the Scalar System. As he struggles with the thought of telling the truth to his friends, Kaito encounters the strange Inves in Helheim Forest, once more.

As Mai accepts the powers of the Golden Fruit and attempts to change the fate that has befallen her friends, Kaito seeks her out to gain its power, as well.

Zack sets a trap for Kaito, but...

Meanwhile, Kouta has gained command over an Inves army whilst battling Kaito.

When the Roidmudes seem to discover a new form of evolution for themselves, Mr. Belt decides it is the time for Kamen Rider Drive to use the new Shift Car: Shift Technic to further combat the Roidmudes.

Shinnosuke and Kiriko investigate a series of power outages that they believe to be caused by the Roidmudes, but it only brings up questions of Mr. Belt's past when Heart himself becomes involved.

When it is discovered that Volt is trying to cause a blackout on Christmas Eve to further the Roidmudes' plans, Shinnosuke and Kiriko race to stop them.

The Unit is shocked to find two Kyu Saijos. Which one of them is real, and which is not?

Simultaneous murders are going on, and Chase keeps popping up in surveillance tapes. While Kiriko and Shinnosuke believe in Chase's innocence, Go does not. But what is really going on?

Just as Shinnosuke had deduced, the bodies were of people the Roidmudes had copied in the past. Having avoided being defeated by Mashin Chaser after using a new Shift Car, Shinnosuke tries to see if there was anything left of his once righteous spirit. Also, Type Formula’s restrain on Shinnosuke’s body puts his life at serious risk. Go continues to insist on equating Roidmudes with evil and declares his intention of ending Chase as soon as he can. Meanwhile, the supposedly dead bodies stored at the morgue start crawling into the Special Investigation Unit's office.

One year ago, Shinnosuke and Hayase were investigating the anti-government organization called Neo Shade. Now they’ve become active again, a Neo Shade thief breaks into the Metro Police Department to steal an item that had been left behind at a crime scene. The mysterious item, called a Ghost Eyecon, that had been left behind at the crime scene seems to be connected to the case.

Takeru and the others go to Ryu's tomb to let him know that Takeru was able to revive. The Gammaizer menace is no more and everything has gone back to normal. Takeru has returned to school and is being helped by Akari to catch up with his studies. Alain looks up to the blue sky and makes a decision. Makoto, who with Kanon has seen off Takeru, lets his sister know of a decision of his own.

A strange young boy holding a mysterious artifact appears and says: "The one with the power to change the world." What is the meaning of these words? The boy is attacked by the black Kamen Rider that appeared before.