On a small planet, known as the planet of the two suns, people live in peace, and sustain themselves thanks to planting and hunting. Until one day a hundred killer dragons land there, determined to take total control of the planet and forcing all its inhabitants to renounce life on the surface and move to the caves, out of the reach of the dangerous dragons. For many years, life on the planet was a symphony of violence, where humans, when they could, slaughtered dragons on their hunting expeditions; and dragons, for their part, incinerated and dismembered humans at any opportunity that presented themselves. But the king who had ruled the planet of the two suns before the coming of the dragons was determined to drive them out of his territory, and devised a plan to storm the ancient castle where the dragons lived. However, this king died without seeing his plans come to fruition, but Miguel, his son, had sworn to his father to fulfill his dream of returning freedom to his kingdom.