The story follows a trio of Japanese youths of Chinese descent who escape their semi-rural upbringing and relocate to Shinjuku, Tokyo, where they befriend a troubled Shanghai prostitute and fall foul of a local crime syndicate. Like many of Miike's works, the film examines the underbelly of respectable Japanese society and the problems of assimilation faced by non-ethnically Japanese people in Japan.
When his video game prowess is discovered by the International Network of Excel-Science and Technology — or I.N.E.T. — high school student Kenta Date is brought in to lend his expertise to their mysterious research. Meanwhile, four classmates show up, wanting to know more about the I.N.E.T. facility. Their experience will change their lives forever, as I.N.E.T. survives an attack by the nefarious Dr. Hinelar and an army from another dimension determined to conquer our reality! Now, it's up to Kenta and his four classmates to "install Megaranger" and become the team of heroes their video games prepared them to be!
Eikichi Onizuka, former gang leader, becomes a teacher of a class of students who torment their teachers and fellow students. Of course they do not do this out of whim, they have their reasons. Onizuka is charged by the chairlady to help these troubled students into a more healthy adulthood, and help rehabilitate the teachers in the process as well.
Shūichirō Kiriyama works at the Limitation Task Force, the place where the cases which have reached the statute of limitations are destroyed.
Getting bored of his job, he decides to find a hobby, because it seems important to him to have a hobby.
So he decides to puzzle out the unsolved cases on his free time, helped by his coworker Mikazuki, who seems to have a crush on him.
The meteorite believed to have once killed off the dinosaurs actually rattled the Earth into two parallel universes — Another Earth and Dino Earth, where dinosaurs continued to thrive. Now they have evolved into the Saurians, a race of humanoid dinosaurs, and the Bakuryu , a race of mechanized dinosaurs. But the wall between our universes has been breached. The Evolians that have been at war with the Saurians and Bakuryu have invaded, and it's up to the Abarangers to protect the world!