A lone tree stands tall in the sea of fire.

The air wavers from the heat of the flames.

The questions of who started the fire and why have become irrelevant.

What remains now is this tree; aside from it being the single one standing, it appears ordinary. No marks of magic, no genetic modifications, no technological shields or barriers protecting it. So, how has it survived, without any scorch marks? And why?

The humans left on this planet will never know the answers, for this tree will outlive them all. And with it, the secret of immortality remains safe.