A newly-trained member of the Special Police Dekaranger is given an assignment to Earth where he is placed in the leadership of a five-man crew completely turning the team upside down on his first mission.
Three mysterious machines crash-land on Earth, forcing the Dekarangers to investigate what they are and for what purpose they're for before their diabolical impact is unleashed on the populace.
After his perfect record seemingly becomes tarnished by an Alienizer getting away with the princess and the Wellness Stone, Hoji and Ban pursue Rikomoian Kevakia into virtual reality in order to find a way to defeat the virtual criminal.
The Dekarangers investigate a murder of an alien woman where the only known suspect is an Alienizer who destroys cars. But while the team see this as an easy case, Sen-chan realizes not all is as it appears.
The attack of a new Kaijuuki controlled by a boy with telepathic abilities forces Jasmine to confront her own uniqueness as she tries to reach out to help him understand himself and his powers.
With Zamuzan Sheik in pursuit of her, Ban and Myra must work together and with the other Dekarangers to find a way to bring him to justice, even if it means giving him what he wants.
Kajimerian Ben G, an Alienizer personally brought down by Doggie Kruger, comes to Earth to take revenge on his captor by kidnapping Swan. This forces Kruger to take in action.
Having discovered Kruger's ability to become DekaMaster, the Dekaranger team plot to see their boss in action once again; yet Kruger has a harsh lesson to teach them through their next mission.
Alienizer Titanian Metius comes to Earth to gain control of the ultimate mechanical monster, while Sen-chan meets a girl who is more peculiar than she initially lets on.
As Metiussl prepares to awaken the full capabilities of Gigas, Sen and the Dekaranger fight to protect Flora and prevent her from being used for the purpose she was created for.
Sick of being underestimated and being shown off by Jasmine, Umeko decides to model herself after DekaYellow in hopes of improving her respect and reputation.
The Dekaranger head to Kyoto, where they encounter an alien who learned the ways of Bushido from Ban's Shinsengumi ancestor and whom they must convince to return home without causing trouble.
A mad bomber Alienizer forces the Dekaranger to play in a game with the Earth at stake, where Kruger peculiarly makes Ban the participant who must run to defuse the targets.
The Hell Siblings, a team of particularly infamous Alienizer criminal siblings, arrive on Earth to cause chaos and havoc while forcing Jasmine to face their true terror to the point of being the only potential hope of savior.
With the Earth Dekarangers held at the mercy of the Hell Siblings, they request to main base the assistance of an elite Tokkyou agent to combat the world destroyers. But can they last long enough before his arrival?
The Dekarangers are given a direct order from HQ to allow Tetsu complete control of the Hell Siblings case and to not get involved any further. But can DekaBreak defeat the Alienizer threat without what the main team possesses?
When an Alienizer captures Tetsu and threatens to blow up a section of the city, Umeko decides to attempt negotiation with the being, discovering a bizarre secret amidst the truth.
Sen finds himself protecting an elderly alien from a spirit-like Alienizer that only she can stop, made more dangerous when one of the Dekarangers is possessed by it.
Investigating an illegal fighting ring distributing muscle-enhancing drugs, Hoji takes Tetsu's place in fighting the club's champion, revealing more about his drive for perfection.
The return of several deleted Alienizers forces Tetsu to track down Speckionian Genio, a prisoner Alienizer who murdered his parents, in order to find out who is behind this.
With Speckionian Genio free and the Dekaranger of Earth being abducted for his "artistic revenge", Tetsu must know the true means to finally take him down or else suffer a fate worse than death.
Abrella sells a special prototype gear to a mobster Alienizer duo, which easily crushes the Dekaranger forcing them to return to training on a far-off planet to obtain SWAT Mode to handle tougher assignments.
With the Zundaz Family rampaging through the city and capturing Tetsu and Kruger to obtain their target from Dekabase, all hope rides on the Dekaranger, who must figure out the means to survive and solve Tortorian Buntar SWAT Mode training.
An investigation by Sen regarding three rampaging Kaijuuki leads to three rich and powerful aliens vacationing on Earth and a poor cat alien whose discovery may get him in major trouble.
The murder of a suspect in a thirteen-year unsolved cold case brings an old detective to Earth to solve the mystery, yet Jasmine discovers he may have lost something, or someone during his investigation, however, Jasmine is incapacitated by the very detective in charge of the investigation.
The Dekarangers give Swan a day off to accept an award for her science work, but face difficulty without her around against a former S.P.D. scientist and his composite Kaijuuki.
Umeko becomes trapped within a bizarre nightmare created by a dream-manipulating Alienizer, forcing Jasmine to solve the case before her soul is trapped away forever.
Lisa Teagle, a Tokkyou commander, comes to Earth to stop a special fire-manipulating Alienizer threat, as well as bring her student Tetsu back into the fold for losing his emotionless Tokkyou ways.
An assassin Alienizer transports Sen into a shrinking room, where he must figure out the means of his technique and a way out before being crushed in thirty minutes time.
The Dekaranger must decipher the mystery of a space monster planted on Earth to destroy it through remains left with it's arrival; while Ban tries to help Hoji deal with balancing his work and family.
When a second Browgouls emerges on Earth resummoning the meteor for it's destruction, Hoji must undertake a suicide mission to stop the source of the monster's power, even with Ban's obsession to make sure he returns home alive.
Tired of the Dekaranger interrupting his business ventures, Abrella brings in a swordsman rival of Doggie Kruger to take the badges of the Earth Dekaranger to reduce their threat to criminals.
When a strange doll arrives at Dekabase as a New Year's present to one of them, the Dekaranger try to figure out who sent it and whom it was for, ultimately leading to a bizarre revelation.
Hoji and Jasmine re-team as a duo to take down an ESPer murdering Alienizer who had hurt both in the past and connected to the fall of Earth's first DekaRed.
With an army of mecha-humans and mercenaries at his command, Abrella invades DekaBase, forcing the Dekaranger to scramble back to figure out how to save it and prevent the destruction of their city.
With DekaBase fallen and the technology of the Earth Dekaranger in the hands of Abrella, Ban and his five partner Dekaranger must make a final stand to figure out a way to take back their base and stop the evil black-market Alienizer once and for all.
