EXPERIMENT – FAILED… REPEAT

In the vast expanse of space, a convoy of alien ships roam the universe searching for a planet to call home. After terraforming a suitable planet, they become aware that their experiment has gone awry and they must travel back in time to correct the mistakes they made.
They learn three important lessons. Lessons that will change the course of their history:
If you tamper with the galaxy, it will bite you.
If you tamper with evolution, that will bite you.
Most importantly, if you tamper with time, it will bite back in a way that is impossible to correct.
To survive, they must evacuate all the humans from the planet they have transformed before it dies, and humanity dies with it.