Imagine waking up to a floating fortress hovering above your town. Not only is it strange, but it also contained alien monsters. Fast forward 13yrs and this world is consumed by war, where monstrous beasts clash with brave warriors known as the Dragon Keepers. But it has kind of become the new norm so every Sunday, fans witness the intense Battle Arena Fight between the rangers and the monstrous forces and their supporting fighters known as Dusters, due to their ability that reshapes and heal with their dust like particles. Oh and they happen to be immortal, or so we’re told. To them humans are called surface dwellers.
Turns out these weekly battle are part of a contract between the Rangers and the monsters. Rebellious Duster fighter D is frustrated by years of manipulation, he decides it’s time to flip the narrative—he’ll let the monsters win this week! Not only did the Dragon Keepers brutally eliminate the Dusters’ bosses, they also spared the Duster’s lives only to force them into this deceptive contract. So each week a Duster must morph into a monstrosity to keep the show going, but due to their contract, they must loss every single time.
One week,Duster D decides to fight back against the overwhelming odds, anddd he realizes he’s outmatched. Especially since each Dragon keeper wields a Divine artifact that is extremely strong against the monsters. But…D has a secret! He can shape-shift into a regular guy and decides it’s time to join the ranger forces! His goal? … To get revenge on the 5 Dragon Keepers that killed all of their bosses.
To join the ranks of the Dragon Keepers, D must pass the Ranger exam. He meets his fellow Ranger recruits, and the mighty Blue and Red Keepers, who are on a mission to ensure the Dusters don’t dare break their treaty again. But D’s disappearance raises eyebrows.
Disguising himself as a the Ranger Hibiki, D infiltrates the ranks and meets the cunning Yumeko, a yellow ranger with her own agenda. But finding the Red Dragon keeper amongst all of the other red rangers, makes it difficult for D to enact revenge. Whats worst is that Yumeko senses his true identity and rather than exposing him, proposes an unexpected alliance. Even providing information on the Dragon keeper’s five legendary divine artifacts—talisman that can grant unimaginable powers and even eliminate immortal monsters! Also informing D where they are stored within the arena.
Hibiki overheard their conversation and is now aware of D’s true identity. So he confronts D and asks that he give up any evil plan. Even though D states that he will not give up, Hibiki still informs him that he has passed the ranger test.
Continuing his plan, D transforms into the Red Dragon Keeper, sneaking under the arena to seize these artifacts. Guided by Yumeko through his earpiece, he approaches the hidden chamber—but he is caught and forced to fight against Shun, a skilled 3rd class junior member of the red squad! As the conflict escalates, he eventually escapes only to be confronted by the Red Keeper and a camera crew, breaking the silence of their deceptive combat. Just as it seems D is cornered, the blue ranger unleashes his divine artifact on him—but In a shocking twist, D reveals that the arm he lost was part of an elaborate illusion, one that allowed him to escape unnoticed while also giving Yumeko the chance to secretly obtain the artifact.
Somewhere in the depths of the forest, D, manages to survive after the events of the previous battle. Hibiki finds him and expresses a desire to assist D and uncover the truth behind the war.
The Dragon Keeper leaders hold a meeting. Red, the leader everyone looks up to, reveals that his divine artifact has been stolen! He’s unable to transform out of his full Ranger costume, leaving him vulnerable and frustrated. His junior, Jin, boldly suggests that Red should step down, blaming him for losing such a critical piece of their defense. In a flashback it is revealed that Jin was the one who leaked the artifact’s location! In a rage driven fit, Red savagely punches Jin. It’s ruthless, but Red needs to assert his strength and reclaim his authority!
As they connect, Hibiki opens up about his tragic past: his parents, who believed the Rangers were wrong for forcing monsters into battle, fell victim to a monster Petrola that called himself a god. Petrola slaughtered its own followers, leaving Hibiki and his sister orphaned. Yet, he was saved by none other than the retired Blue Ranger, who raised him as his own.
D and Hibiki form an alliance while Aran, a junior from Blue Squad, searches for D. Aran happens to be wielding his divine artifact replica that he states is powered by friendship. When D accidentally touches the replica, he realizes its dangerous power. In a twist, D takes Hibiki hostage in exchange for the artifact, but Hibiki escapes, grabs the artifact, and knocks D off a ledge, unaware they’ve swapped places. Hibiki sacrificed his arm, accepted a duster mask, and allowed D to clone him to infiltrate the rangers, sparking a rivalry as they pursue conflicting goals. One to fix the system and the other to destroy it.
Masked as Hibiki, D finds out that Hibiki has secretly been hiding a duster named XX in his closet, who’s equally determined to take down the Rangers. D tells her he’s a fighter too, and she decides to join him. Then, in a surprising visit, D meets Hibiki’s sister. She warns him to quit the Rangers, revealing that he’s too passive for the fight. But here’s the twist—Hibiki’s sister is actually the Pink Ranger leader.
As the final exam begins, the trainees are split into five distinct groups, each representing a crucial role in their upcoming battle against monsters.
- Pink: Combat service support specialists
- Green: Stealth combat experts
- Yellow: Central intelligence
- Blue: Admin and teamwork, always seeing the big picture
- Red: Monster extermination experts
They must defeat five monsters—played by the current junior Rangers—and each team needs to grab a key matching their color to escape the field and earn a chance to be scouted by a squad. They have 3 days to complete the exam.
Hibiki, secrectly D, suggests one of their teammates distracts the two squad juniors, Kanon and Shun, while the rest provide cover using fire extinguishers. They end up working together to take down Shun! As Day 1 ends, with Hibiki and Shun locked in a tense standoff, swords crossed. Hibiki realizes there is only one key per squad! That means D and Kai are now pitted against each other.
A Flashback reveals that Kai’s older brother died four years ago at the hands of the boss monster, Peltrola. But that shouldn’t be, because the all boss monsters were defeated 13yrs ago?
The next day the five highest scorers from each color finally come together to form a team! While Hibiki, Koguma, Angel, and Yamato join forces.
In a twist of fate, Koguma punches Hibiki but realizes he’s a monster! Despite their differences, they decide to team up. Meanwhile, Yumeko surprises them by handing over the yellow key—andddd she’s again aware of Hibiki’s true identity! However, the tension escalates when Yukino snatches yellow key. but Hibiki’s team fakes the end of Day sound so the other team can let their guard down. Allowing them to take the yellow key back.
