Terrasauria was once a cold desert planet that orbited a star that looks like Earth´s sun. Terrasauria never had life on its surface, but that does´nt mean it won´t have it in the future. Humanity is now a space travelling civilization that terraforms planets and seeds them with animals and plants from Earth, one of these planets was Terrasauria, which after various centuries, became a planet with good conditions for life. After its terraformation, humans built cities and many generations were born on its surface. However, centuries later, the resources of Terrasauria ran out, because of this, humanity had to leave Terrasauria and colonize new planets which had more resources.
After humans left Terrasauria, something amazing will happen on its surface: The evolution of some species of animals such as insects, fishes and lizards. A new era and a new period of life on this terraformed world had just began...