An alien race uses humans to host their parasitic offspring. After a human boy witnesses the birth of these parasites, he is horrified by the symbiotic agreement and realizes why the alien has nourished him so much better than his siblings all his life.

On a far-away planet in a jail cell, a young human woman pregnant with a non-human being urges her child to come quickly, terrified of being murdered by her human companions as she awaits execution.

A male human travels to a seemingly unintelligent alien population with the secret goal of gaining their genetic information to clone them, creating enslaved workers.

In a future Los Angeles burdened by overpopulation, a twelve-year-old boy hires an alien assassin to kill the man forcing an abortion on his mother.

When an alien spaceship lands on Earth in need of help, leaders of countries around the world help and house them, causing tension between humans and these costly guests.

On an alien world, a colony of humans has evolved to reproduce with one mother and many fathers. After delaying for years, one young woman finally chooses three fathers for her baby, but her desire for freedom draws her into the orbit of the post-human anthropologists who have come from the stars to study this quaint biological mating ritual.

In deep space, a crew of humans and artificial intelligence deliberate on whether or not to change course so as to preserve the life of an innocent-presenting alien-being.

A man from a future overrun by genetic modification struggles in vain to keep unregulated technology out of his neighborhood and marriage.

An aging man is taking care of his dementia-effected wife when his long-absent son—who has transformed into a silver-skinned, red-eyed creature—returns to Earth from his job as an outer space exobiologist.

At a space frontier, infected humans are turning into alien moth creatures and the government considers mass executing them all. A scientist who has seen signs of the moths' intelligence must fight for their lives.