People in Japan believed Dinosaurs were extinct from a million years ago, but the orphanage young woman Kyou Naoryuu adapt her new environment after her father abandoned her in the strange forest after his wife gave birth to her on purpose because he wanted a son instead of daughter, he believe she was a weak and pathetic, Kyou was found a new family, she was raised by the strongest dinosaurs in the world, the Tyrannosaurus Rex, but this one seemed queen or a female T-Rex, the female reptile decided to raise her as it's own offspring, a new protector and a queen on this pre-historical territory. When she grew up, soon her unforgivable vengeance awakens not born as a villain, but a real monster begin.