The alien planet far away from the Earth, which is also the hometown of the protagonist Top - Hazzat, was destroyed by a group of evil people who were trying to invade the universe~the space biker group Bowzock, and then they made Hazzat disappear like a large firework (bang!). Their next target is actually the Earth. They want to completely destroy the people on Earth and turn the Earth into the next Hazzat, ending it all with a super-large fireworks show. The only remaining Top, in order to avenge his mother, Before her death, her mother told her that the only way to deal with those evil maniacs is to rely on the power of cars in the constellation legend, that is, the new generation of superheroes, "Gizo Sentai Kararanger", can destroy them. So Tub agreed to her mother and go to Earth to find the five young people with the power of cars in the constellation legend before Bowzock invades the Earth. Those five young people happen to be related to cars. Therefore, this heroic legend that exceeds the speed limit and justice is about to start. Get ready to step on the accelerator and transform Kararanger!