The last hours of Earth.
Natural cataclysms, warfare, pollution and many other woes finally broke the back of the world.
Even the magically advanced alien race of sapient ponies could not do a thing.
It was too late to change anything, when they breached the border between realities for the first time of its history.
They hoped to find a new world, full of exciting discoveries, but instead, they were forced to helpessly observe the demise of the planet that was a home for billions life forms over the course of a vast ocean of time.
But when the last group of scouts was evacuated, they brought with them someone, who, strictly speaking, couldn't have possible exist by now. An alive human infant girl.
Now, with the last surviving member of an extinct specie, it's up to them to do all they can to provide her life that her parents didn't have a chance to provide.