When you have lived for forever and a half, time ceases to have meaning. You have seen everything there is to see, gone to every corner of the galaxy and done everything you ever could and death doesn't seem so bad, right? Wrong. Immortality is the biggest curse and blessing for the race simply called Aeterians. They are cursed to experience time as humans do while living for longer than any one of the can imagine.
To reduce the boredom they created a game whose chess pieces are those very same mortals: take a civilization from the stone age to the space age in a while living exactly as they do. Simple enough for an immortal until things go so wrong. Wrong destination chosen, wrong universal rules and definitely wrong physics(?) if there is anything even remotely like that.
Join a young? immortal in his journey to prove that immortality is the best gift they ever had.