

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.
Kenta Date, a game-playing high schooler, is recruited alongside four other students to unexpectedly become the Megaranger due to the pre-emptive start of an invasion from the dimension of Neziregia.
After barely escaping from Neziregia to I.N.E.T.'s space headquarters, Kenta rashly returns to Earth to deal with them personally.

Kenta confronts Shun about putting his needs over the team's when he chooses to do extra studies over his Megaranger duties.