"There's something I'd like to ask of you, Ichinose."

Houtaro is asked by Rinne, who has a thoughtful look on her face, to confide in him about a certain problem of hers. Just what exactly is on her mind?

Then the two are dispatched to the appearance of a new Level 10, X-Rex. Houtaro and Rinne attempt to tame it but encounter a little girl instead...

The raw power of Super Gotchard overwhelms Dread and gains an upper-hand, but Dread is capable of executing counterattacks, resulting in a back-and-forth battle.

Meanwhile, Lachesis approaches the daughter-father duo Sawa and Manabe. Rinne attempts to protect them but Atropos intervenes with her magical abilities.

"So you are powerless after all."

Rinne is robbed of her bodily freedom by the triumphant Atropos...?!

Gotchard defeats the Malgam, who threatens the people, but the people of the city still fiercely condemn Chemies and the alchemists. A world where people and Chemies can live together.... Houtaro has no end to his worries.

Supana has lost his driver, and Gigist calls on him to fight with him. Supana refuses, and fights as Valvarad, but is engulfed by the black flames that Gigist unleashes. Supana foresees his own demise... but then!?

Glion, transformed into Kamen Rider Eld by the power of the Philosopher's Stone, summons an army of Dreatroopers. The city and its people are transformed into gold, and El Dorado is steadily approaching completion.

Houtaro tells his mother, Tamami, that as a Kamen Rider he will create a future where humans and Chemies can live together, and that he doesn't want to run away from his Gotcha! He then joins Rinne, Supana, and the other Chemies in a final battle to defeat Glion!