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 Saurian (dinosaur people) and Bakuryuu (mechanical dinosaur) races came into being on DinoEarth but were at war with the Evolians, entities that emerged from the meteor. The two Earths are separate until Asuka, a Saurian from Dino Earth, 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.