An intergalactic space war leads to a gladiator-like fight between a human and a spherical alien. They fight to the death, and whoever wins prevents the annihilation of their race.

In the far future, extraterrestrials wage war on Earth. Despite the aliens’ comparative strength, mankind’s tenacity fascinates one extraterrestrial soldier to the point of absolute endearment.

The world is at war: on one side, the corporate remains of human civilization. On the other, the aliens who have returned from Mars to live and regrow the Northern Hemisphere. In the midst of the war, one unnamed corporate solider realizes that their travel technology can be used to time-travel and takes that opportunity to try to save lives in the midst of this senseless violence.

Extraterrestrial visitors promise solutions to America's financial, environmental, and energy problems - in exchange for the country's black citizens. A cultural struggle breaks out to determine whether the trade will be made.

Assuming that they were here to invade, mankind massacred the aliens whose ships landed on Earth. Now, the aliens and humans have an uneasy peace together. The aliens who landed on earth love to fly kites. One kite-maker sells them despite harassment from skinheads who hate the aliens and anyone who does business with them.

A simulacron, who serves as a representative of an alien species, speaks with the US Secretary of Science about their wish to purchase the planet Jupiter. While the Secretary worries about stirring up conflict between the simulacron and another species, the simulacron assures him that no harm will come to Earth, and the two eventually reach an agreement.

On an intergalactic spaceship, two runaway servants turned mercenaries agree to a dangerous mission that will take them back to the planet from which they escaped—in return for a shot at a clean record and a peaceful life.

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.

A young human boy goes into the nearby alien city to play with his alien friends after learning from his parents that humans had lost a battle in the war between the two people. There, he gets attacked by his friends and other aliens; he escapes, only to be told by his parents, once he is home, that the war is lost.

Aliens land peacefully on Earth and promise to fix humans’ societal problems, but humans soon get so frustrated with them that they flee to other planets. The smaller Earth population ends up bringing positive change, but this emigration to other planets reveals that many other populations have fled these aliens for the same reason.