In a futuristic world, some humans have to turn into marine life known as sushi to survive outer space. Sushis are the underclass of human society, and when a young human female researcher working in outer space wants to become a sushi, she faces pushback from the human government.

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.

In the very far future, a woman takes the chance to leave Earth and look for a new planet to settle on. However, each time she's awoken from her stasis pod, she's confronted with the choice of whether to settle on an increasingly unfamiliar and strange planet that will force her to adapt into something non-human or whether to go back to sleep for thousands of years more, hoping for something better.

A newscaster recently arrived in space receives ominous advice from a jaded engineer: whatever you do, leave space because getting attracted to aliens will be the death of us all.

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.

Two extraterrestrial beings land on Earth in search of information and struggle to adapt.

Human detectives work to solve the mystery of who killed a human woman at an Earth-based alien embassy. They soon realize that human methods of solving mysteries come into conflict with the social customs of the aliens.

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.

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.

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.