As time enters the 21st century, technology is highly developed, and humans have invented a time machine that can freely travel through time and space. Under the jurisdiction of the Space and Time Ordinance, people try not to disturb the lives of the ancients, so as not to cause historical changes. One day in the 21st century, the earth was attacked by extremely hot and extremely cold beams. In order to explore the cause, the Japanese Space and Time Administration sent well-trained "Time Warriors" to investigate the Cretaceous period when dinosaurs were rampant. There, they met Princess Altasha (played by Murano Nanami) from the planet Gresa and her attendant robot Ji. From the princess, they learned that the evil Gedemis invaded everywhere, and in order to hunt down the princess, they came to the earth all the way, and even intended to destroy mankind. In order to protect the dinosaurs and the earth in the Cretaceous period, the Time Warriors fought a series of battles with the invaders. Among them, the super warrior Kesai, incarnated by Geu (played by Onishi Tetsuya), is the strongest opponent of the Gedemis. The escalating battle between good and evil unfolded in the distant Cretaceous...