Again

Just supposing this isn't the first time humankind has walked this planet. Several versions of mankind could have evolved during the vast age of this planet only to have become extinct through catastrophic events.
Two perfect people, Caban and Keeva, saved from a doomed world, have a very important job to do. 300 million years later absolutely everything rests squarely on their shoulders. It may well involve unimaginable sacrifices and dangers beyond imagination but to refuse the request of an alien, who looks like Caban's father, is simply bad manners. Caban and Keeva incidentally are Adam and Eve.
They say there's an explanation for most things in life… so just for a while, forget everything you know about everything and open your mind. All you really need to know right now is that a cheeseburger is the most underrated thing in the universe.