After millions of years, the Deboss Army has returned to attempt to wipe out the world of man, after having nearly succeeded to do so to the world of the dinosaurs. Standing in their way is Daigo Kiryu, who has been tasked to first find and battle the ZyuDenRyu Gabutyra so he can become one of the Kyoryugers.
The five Kyoryugers are now assembled, but Ian and Souji do not want to act together as a team, keeping their identities secret from each other, while Amy's butler Gentle and Nobuharu's sister tries to keep them out of the fray.
The sixth Zyudenryu, Zyudenryu Pteragodon, has been stolen by the Deboss Army, makes his reappearance under Dogold's control. The fight rages for the Kyoryugers to reclaim the stolen Zyudenryu, but they soon learn something about Dogold's past.
After an intense battle between the Kyoryuger and the Deboss Army, Torin's goal is finally achieved with Kyoryu Gold's resurrection! However, the newly awakened Utsusemimaru leaves suddenly, claiming that he's "not their friend, and won't become one until Daigo proves to him he can be a suitable Lord.
After Debo Zaihon attacks to make people jealous of each other when digging for treasure, Ian realizes that Aigallon is the one responsible for the death of his good friend Shiro Mifune, and seeks his revenge.
With several Zorima infecting the city, Torin fears that Deboth's resurrection draws near. The appearance of Debo Nagareboshi, killer of the dinosaurs, sends the Kyoryugers to seek help from the spirit of kung fu user Kyoryu Gray.
While celebrating Tanabata with Nobuharu's family, Amy makes a wish and finds that the next day it has come true. However, it turns out to be the power of Debo Tanabanta, who grants Tanabata wishes but the person will die the next day.
Yayoi reveals she has planned to install data into Plezuon that will allow it to defeat Deboth, as it went to investigate a planet that was destroyed before Deboth came to the Earth. However, the Deboth Army plans for this and hopes to speed up the resurrection of their leader on a particularly rainy day.
Deboth is too powerful for all of Kyoryuzin's and Pteraidenoh's current formations, and need Yayoi to complete her modifications on Plezuon if they have any chance of stopping the impending apocalypse.
Yayoi, having succeeded her grandfather as Kyoryu Violet, tries to go on adventures with the other Kyoryugers, but once she starts crying she finds herself unable to transform. Debo Hyogakki takes advantage of this, turning her tears into ice to take the Earth into a new ice age.
In order to combat Resentment Knight Endolf, Yayoi comes up with a new Zyudenchi for Kyoryu Red that would increase his powers. However, the new Zyudenchi accidentally causes him to act more like Gabutyra.
Ian figures out that the stone Daigo received from his father is one of thirteen fragments of a Guardians Zyudenryu that makes up the key to accessing the tenth Zyudenryu, Bragigas. Amy realizes that an acquaintance of hers, Mitsuhiko, has another one of the stones, and on his birthday he decides to give it away in a contest that the Kyoryugers and the Deboss Army take part in.
The local mall holds a festival to welcome fall, but Debo Vaacance attacks, making everybody stop worrying about their lives and instead focus on having fun and only fun, including Amy and Souji, much to the shock of Nobuharu who is at the mall with his sister.
When Debo Spokorn attacks, the Kyoryugers attempt to use Yayoi's newly developed Victory Beast Battery, but Spocorn insists that they play a fair game of basketball, forcing Daigo to teach the others how to properly play the game.
After Ian teases Utsusemimaru with some lady friends of his, he is surprised by the visit of his old girlfriend Erica. However, when Debo Akidamonne attacks, both Utsusemimaru and Erica are trapped in an alternate dimension, where Utsusemimaru must overcome his uneasiness around women if he is to protect Erica.
With the final secret stone, the Kyoryugers seek out the final resting place of the tenth Zyudenryu Bragigas . However, Debo Tairyon is sent out to stop them from awakening the most powerful of Zyudenryu , and Daigo's father Dantetsu seems to have his own plans.
The Kyoryugers must find a way to stop defeated Debo Monsters from overrunning the Earth and stop the evil Mad Torin. Torin believes there is a way to save everyone, and that is to find a partner for Bragigas.
Amy goes on a date with Shinya Tsukouchi, a man who looks remarkably like Tessai, only to discover that he is actually her favorite manga author Yu Aoyagi. He has come looking for a fan who can replace him as the author. Tessai, however, believes that Shinya is one of his descendants, and decides to see if he can transform this fragile man into someone he can be proud of.
Debo Kantokku, Candelilla's new monster, kidnaps people and locks them up in another dimension where they are forced to fall in love. Meanwhile Nossan enters a marriage interview and is unexpectedly paired with Candelilla in her human form.