Under orders from Gynamo, SS Sutatanzo is sent with special gas Exhaus provided to put in cars to have them run away to the Baribarian to be chop-shopped into new Bowzock vehicles. However, while the other Carrangers handle the Gorotsuki, Red Racer drives Signalman-remebering how he delt with a runaway gang of alien teenagers-to ahead of the cars to use his heart-warming song to guilt-trip the cars to return to Earth with Sutatanzo retreating. Later, after being forced to return to garage on foot, Kyosuke arrives to a hot spring where he finds a strange monster who is pursued by UAOH. The monster, Bara Mobile, manages to win Kyosuke over with a sob story of persecution as his teammates arrive. The UAOH team is also gathered and, after questioning each other, both teams transform to battle it out. While the others pilot RV Robo and OHranger Robo in the fight's climax, Red Racer fights OhRed to protect Bara Mobile. However, the Carranger's transformation attracts the Bowzock who help the OhRed fight Red Racer before it escalates into a highway chase scene. After Red Racer learns that Bara Mobile is really evil, the villain revealing his insane plot to convert humans into Car-Humans, he stops Pegasus Thunder to hand him over to OhRed. Under Exhaus's orders, while holding the regrouped Carrangers off, Gynamo has his men to take Bara Mobile back with them to the Baribarian with OhRed captured as well thanks to Sutatanzo's high octane gas. The other Ohrangers arrive, learning of their leader's capture with intent to report it to Chief Miura so Kyosuke would face the consequences.
Later, Chief Miura arrives to the Pegasus Garage and offers not to press charges if the Carrangers rescue OhRed. But it requires them to undergo harsh special training to pilot OHRanger Robo, with Kyosuke being the most tortured among the group. Though the Carrangers passed, Exhaus expected the rescue attempt and had the Bowzock set up a trap so they be subjected to Bara Mobile's experiment and become Car-Humans along with Goro. But Red Racer was not among the captured and he manages to save the others as they destroy Bara Mobile's lab. Taking the fight back to Earth, the Carrangers and OHRangers take out the Wumpers before defeating SS Sutanzo and Bara Mobile with a Booster Cannon/OHren Bazooka combo. The two monsters then enlarge with VRV Robo and Ohranger Robo formed to fight them. However, the fight becomes more hectic when Norshirion-Extra appears before Sirender arrives to even the odds as the Sentai mecha use their signature attacks to destroy the three villains. Soon after, having buried the hatchet, the two Sentai teams celebrate their win on the beach.
Ohranger: There are too many issues that can allow for the Ohranger to appear in this film, including the utter alteration of Earth due to the Baranoia's six months ruling Earth during the series' endgame, none of which is mentioned. However a similar problem is timing: the opening episode of Ohranger confirms that the series occurs in 1999 and that Bara Mobile is the final member of Baranoia not defeated; however the end of the story for Carranger occurs on January 24, 1997, proving that Carranger can only occur between the time-period of 1996 and 1997; thus this encounter typically could never happen between these two teams.
Carranger vs. Ohranger was the second of fourteen crossover movies shown during the Super Sentai Versus Series Theater, a special event on TV Asahi during the run of Tensou Sentai Goseiger. As with the others, this movie was aired in two half-hour parts an hour before the week's episode of Goseiger, there was also commentary at the beginning and end by the Goseigers about the teams and the storylines within the movie.