Gordon Pruett is an astronaut that somehow found himself in a landscape that reminds him of the forests of Colorado, with no memories of how he got there. He's a sole surviving crew member of a spaceship that was apparently destroyed by a nuclear satellite.
He rapidly ages and rests as he's being watched by a Monolith that created the forest landscape. The monolith turns Pruett into a New Seed. The being that was once Pruett then travels the galaxy witnessing the wonders of the universe and the emergence of life on other planets. The New Seed came upon a planet (maybe Earth, maybe an alien planet) that destroying itself by war. While the New Seed is unable or unwilling to prevent this devastation, he takes the essence of two doomed lovers and uses it to seed another planet with the potential for human life.