When the Machine Empire Baranoia begins an assault on Earth, United Airforce commander Gorou Hoshino takes matters in his own hands to fight back against them and save his four new teammates as OhRed.
The four new Ohranger learn from Gorou and Commander Miura about the power they are now entrusted with as Baranoia sends down a giant to continue their rampage of Tokyo.
Gorou must protect a boy targeted by Prince Buldont for being associated with the means that lead to the discovery of Superpower in the modern age.
Acha infects a police officer with a parasite from a Machine Beast, mutating him into a "human Machine Beast" that threatens the populace, including his own son!
Yuuji tries to assist a pair of brothers in turmoil as Baranoia sends down a brotherly set of Machine Beasts to turn one against the other.
A genius Machine Beast manipulates an incident from Miura's past in hopes of using it to find out intelligence on the new machines being built for the Ohranger.
In order to save both Miura and the city from the combined assault of Bara Brain and Bara Separate, the Ohranger must complete their new secret weapon on their own without their commander's assistance.
In order to deal with the threat of Ohranger Robo, Bacchus Wrath brings in a powerful Machine Beast and upgrades Acha and Kocha to be able to create a greater challenge to the U.A.O.H. forces.
When a Machine Beast infects the male Ohranger with a deadly rusting malady, Juri decides to join with Baranoia in order to save herself, even against Momo's pleas.
Ohranger must try to stop a hacking Machine Beast trying to break into their systems and prevent them from using Ohranger Robo against it.
When Hysteria sends down a Machine Beast to make humanity fall in love with appliances, Shouhei must figure out how to stop it before they enact their true plan.
Gorou is placed in charge of a neighbor's baby just as a Machine Beast is unleashed to turn baby cries into weapons of destruction.
When Momo is stranded while trying to stop a Machine Beast trying to reawaken Mt. Fuji's volcano, she is rescued by a mysterious dog protecting the mountain.
The Ohranger become suspicious of Baranoia's involvement in the creation of a new line of helper robots that emerge to assist humanity.
Yuji encounters a Machine Beast created from the remnants of Baranoia's failures whose only desire is to destroy Bacchus Wrath!
The musical abilities of a Machine Beast accidentally brings a 23rd Century boy to the present, forcing Shouhei to protect him while trying to figure out how to send him back home.
The Ohranger pursue a mad scientist who steals Yuji's Power Brace, fearing he will turn over it's secrets to Baranoia.
The Ohranger try to figure out the mystery of the robot boy Shigeru, even as his "father", Genius Kuroda, joins with the Baranoia cause.
When Bacchus Wrath's newest Machine Beast easily overwhelms Ohranger Robo, Gorou discovers an earlier U.A.O.H. mecha that previously killed its former pilot!
Buldont develops a boxing Machine Beast to steal Shouhei's ultimate move in order to defeat Red Puncher, forcing Gorou to work to develop the means to stop his friend's stolen attack.
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Buldont and Multiwa take their places as the new leaders of Baranoia, crushing Bomber the Great while forcing him to be used in the most humiliating way possible for Earth's destruction.
Dorin decides to release a forbidden ancient power in order to save the Ohranger when they become captured for Buldont's public execution, putting both herself and Riki at risk.
The Ohranger go undercover in order to lure out a Machine Beast hypnotizing people into returning to younger, more carefree days.
When Multiwa decides to use her beauty to lure the male Ohranger to help her, Momo decides to become Gunmazin's master in order to have him assist the team.
Kaiser Buldont uses a machine-controlling Machine Beast to begin a final all-out assault of Earth, forcing the Ohranger into the beginning of their ultimate showdown.
With Baranoia's destruction and the capture of their teammates wearing them down, the Ohranger try to figure how to deal with the invasion as their battle to save their world becomes burdened by another sacrifice.
After taking a detour to discover how to bring back their Super-Power, the Ohranger return to Earth 6 months later and completely conquered by Baranoia!
With their Super-Power restored, the Ohranger confront Buldont and Multiwa in order to save the Earth from Baranoia, though face one final task that could determine the future!
