Mami Higashiyama

When a girl named Ariyoshi Juna has a severe accident, her spirit turns to light and rises up out of her body into the night sky where she gets a glimpse of Earth a few months into the future. What she sees is the Earth on the brink of total destruction, ruled by the merciless demon forces called the Raajas. Then, a person named Chris Hawken gives Juna a "power stone" and tells her to use it to save the Earth. The power stone gives her the ability to call up an "aura suit", which activates and enhances a person's dormant special powers.

Scientists believe that 65,000,000 years ago, a meteorite's crash on Earth killed off the dinosaurs, but in truth, it split Earth into two parallel universes: The Earth we know is referred to as "Another-Earth" by the residents of the Earth where dinosaurs were still the superior species, Dino Earth. Overtime, the humanoid Ryujin(dino people) and Bakuryuu(mecha dinos) races came into being on DinoEarth but were at war with the Evolians, enities that emerged from the meteor. The two Earths are separate until Asuka, a Ryujin from DinoEarth, arrives on Earth via a transdimensional portal. However, he is followed by the Evolians in their Anamolicarus spaceship and the three Bakuryuus under their control. As the Bakuryuus Tyrannosaurus, Ptreranodon, and Triceratops attack Tokyo, a call is sent out to people who possess DinoGuts and the potential of gaining the power to tame the rampaging Bakuryuu. Together with their Bakuryuu partners, the three people recognized by the first three Bakuryuu become Abarangers to protect their dimension from the Evolians.