After witnessing the destruction of his home, Hazardian Dapp must find (and somehow convince) five humans of the Pegasus Garage who possess the connection with legendary car constellations to become the Carranger and save their planet from the destructive force of the evil planet-destroying Bowzock.
The Carranger escape from Dappu's explanation of their new Giga Formula weapon only to need it to take on a Gorotsuki who wants to use car noises as a signal to get the Earth blown up by other aliens.
On a trip to Earth to sample the local delicacies, Inventor Grotch accidentally becomes a giant from something he ate, forcing the Carranger into a situation where they must create a means to fight larger threats.
Having figured out the key to growth being a certain imo-youkan, Grotch unleashes the full potential of Bowzock's best eater, forcing the Carranger to fully utilize their new dream vehicles and merge into a giant robot to face it.
Naoki is strangely being ignored by the rest of Carranger after meeting with a rival car-maker, while Glutch invents a weight-loss spray with peculiar side effects that he gives to a graffiti-making Bowzock thug .
Kyosuke quits the Pegasus Garage hoping to pursue his racing dreams, while encountering a peculiar Gorotsuki dish-cleaner who may be connected to Dapp's childhood racing hero.
Natsumi decides to adopt Naoki as her little brother and help him out when they're confronted by a female bancho Gorotsuki and her rampaging army of bicycle riders.
Signalman, an officer from Planet Police, comes to Earth to take charge in taking down Gynamo and the Bowzock...while simultaneously causing nothing but problems for the Carranger.
With the other Bowzock fearing Signalman, Zonnette and a revived UU Urin head to Earth to trick him by manipulating him to fight against the Carranger, leading to trouble for both Kyosuke and Youko.
A ritual by Zelmoda to surpass the speed limit of his bike to obtain a legendary power (using a fuel additive Minoru sold him) forces both the Bowzock warrior and Green Racer to face their respective fears of lightning.
Having strange feelings of love towards her enemy Red Racer, Zonnette and her cockroach servant cause chaos on Earth in order for her to reveal these feelings to a confused Kyosuke.
In hoping to improve their battles with the Carranger, the Bowzock hire Instructor Ritchihiker for consultation, unaware of his own long history with Signalman.
Ritchihiker enlists a fashion designer Gorotsuki to create a mind-controlling outfit that brainwashes Signalman and Sirender under his control to fight the Carranger.
On a company vacation to Nasu Kougen, Natsumi protects a little girl accused of lying about the appearance of an alien in the area (in actuality a Gorotsuki on research assignment)
When a pitching Gorotsuki is sent after the still-vacationing Carranger, Zonnette intervenes in the proceedings with her confused heart for Red Racer while Kyosuke tries to prove his love for her.
Kyosuke becomes more obsessed with his test-driving dreams after being embarrassed by Naoki's skills just as two Wild Cars from space arrive on Earth that test the limits and wills of both of them.
Youko's terrible navigation skills force her and Natsumi to invent the ultimate navigation device after the male Carranger are abducted by a disappearing shaman Gorotsuki.
Signalman's by-the-book rules obsessions ends up getting him in trouble with Kyosuke after Ichitarou gets abducted from summer school for a plot to create new Bowzock members.
Naoki must work through his emotions in order to protect a princess being pursued by an Olympic-themed Gorotsuki trying to capture a jewel for the Bowzock.
A disagreement regarding the usage of the Carranger to help others makes Kyosuke force Minoru to become the leader of the team to force him to realize his point.
Radietta Fanbelt, a self-proclaimed Carranger fangirl, arrives on Earth to meet with her heroes as they face off against a fake team of "heroic" Gorotsuki!
After accidentally sending off the Carranger's new weapon for delivery, Minoru goes on a mad chase to Hokkaido to get it back while the others try to hold firm against a Gorotsuki with an innumerable arsenal.
When Signalman receives a letter from his family back home, he is forced to determine whether to leave Earth to the Carranger or stay to protect it from the Bowzock.
With Ichitarou captured for the ceremonial Bowzock Festival, Signalman and the Carranger scramble to get him back before he is used to grant them a greater evil power.
With his mind and body strengthened by evil energy and a newly bought giant mech, RitchiRitchihiker begins a campaign against all of his enemies, including the Carranger (who are suddenly without Dappu) and Gynamo.
With RV Robo abducted by RitchiRitchihiker and no other means to fight back, the Carranger are approached by the mysterious VRV Master, who offers them new vehicle mecha to fight Braking. But can he be trusted?
VRV Master continues to train the Carranger to fully utilize the potential of their new mechs, which they must complete on their own before their climactic battle with RitchiRitchihiker and his upgraded Braking.
After reading a farewell letter from VRV Master acknowledging him as a leader, Kyosuke goes all out in facing a Gorotsuki piloting the captured RV Robo in order to get the RV Robo back.
As Dapp finally awakens from his hibernation, he ends up helping the Carranger indirectly face a hot-headed Gorotsuki as they prepare for his surprise party.
Realizing that her older sister Vanity Mirror is Zonnette of the Bowzock, Radietta returns to meet with her, where she ends up meddling in the facets of her complicated love with Red Racer.
Signalman returns to Earth, but has suddenly turned evil under a mysterious influence, ignoring all his previous friendships and entering a rampage over a personal trauma.
With Signalman altered and allied with the Bowzock, the Carranger and Dapp must work out a way to remove the influence of the mind-altering gas to save both him and Sigtarou.
As the Carranger abuse advantages of their fame, the Bowzock gain assistance from the mysterious Exhaus to defeat them and secretly advance his own twisted scheme for Earth's destruction.
A scheme by the Bowzock to protect their imo-youkan supply turns the elderly Imochou owner into a young man, which Youko believes is the man of her dreams.
As the Carranger make Christmas plans, Dapp tries to figure out how to spend it with his "family" while Exhaus starts targeting him due to his connection to the team's Carmagic.
With Dapp captured by Exhaus and the Bowzock, the Carranger discover the truth regarding the source of their powers from VRV Master and attempt to hold on against the evil mechs with the limited energy they have left.
With the Carmagic of their mech nearly used up and Dapp recaptured for the Bowzock mechs, the Carranger must work out their problems with their alien ally if they are to live to see a Merry Christmas.
Kyosuke decides to try and draw Zonnette away from the Bowzock once and for all with his love for her, while Exhaus sends a love-manipulating Gorotsuki to finally marry her to Gynamo for Earth's destruction.
The Bowzock commanders are sent to Earth against the seemingly unstoppable Carranger, while Exhaus manipulates a celestial event to steal away the power of their Carmagic.
Without their Carmagic, the Carranger face their darkest hour while Exhaus reveals his final, true intention for the Bowzock and the destruction of Earth.
The Carranger face off in a final confrontation with Exhaus for the fate of Earth; but against an enemy with the evil powers of the universe on his side, can they finally bring peace (and traffic safety) once and for all?
