Kenta Date, a game-playing high schooler, is recruited alongside four other students to unexpectedly become the Megaranger due to the preemptive start of an invasion from the dimension of Neziregia.
Kouichirou discovers Shibolena performing infiltrations through the internet, forcing him in a situation where the other Megaranger may be rushing into combat without his help.
I.N.E.T. forces Professor Kubota to allow another scientist to use an auto-program on the Galaxy Mega as opposed to the Megaranger as Dr. Hinelar improves on the Nejire Beasts.
Blacks got a deep lack of confidence after failing a test. He even quits school and the Megarangers, but his lazy teacher managed to convince him to look straight.
Shun is called by a friend attending a gifted high school to investigate their digital research club, who are mysteriously building a weapon for Nejiregia.
Kenta must bridge the differences between an I.N.E.T. engineer and his programmer father in order to gain the programming for the Megaranger's newest mech.
Hayakawa is punished by Kubota for stealing the MegaSilver prototype and abandoning his I.N.E.T. duties as the other Megaranger pursue a strange beach illness.
Dr. Hinelar gives Guirail a capsule to make him powerful enough to finally defeat the Megaranger, without revealing the horrifying cost of his new power.
With Super Galaxy Mega being devastated by the mindless Mad Guirail, Kubota instructs the Megarangers to separate the formation and travel to the moon on the Delta Mega to gain the completed Space Mega Project from Hayakawa while they desperately try to hold off Mad Guirail on Earth with the Galaxy Mega.
The female I.N.E.T. programmer behind Kenta's Battle Riser comes to Earth for a crucial upgrade, which MegaRed tries to believe is something more romantic.
Kenta and Miku try to please Hayakawa when they think he's going to die while a Psycho-Nejira tries to take advantage of MegaSilver's greatest weakness.
I.N.E.T. punishes Hayakawa for his actions in becoming MegaSilver against their orders just as he prepares his last piece of the Space Mega Project to be revealed.
When Dr. Hinelar releases an evil Sentai squadron which destroys the Megaranger, Kubota is forced to investigate their connection to Dr. Samejima, his former friend and partner.
Chisato and Miku get into an argument over a trifle matter while NeziYellow and NeziPink challenge each other in finishing off their respective Megaranger.
The Megaranger track down the stolen Mega Voyager, leading to a climactic showdown with the Nejiranger - and unknowingly advancing Hinelar's ultimate desire.
As Kenta begins to worry about surviving his last exams, Dr. Hinelar uses Javious' remains to create a new city where he brings in humanity to serve him.
Kouichirou and Chisato must weigh whether to complete their university entrance exam or save their powerless friends when they become trapped in Hinelar City.
The Megaranger stage a final assault on Hinelar City to save everyone abducted from Hinelar's ultimate plan, only to be pursued by the still vengeful Nejiranger.
