Five young people find themselves in the middle of an alien attack in Moscow and must fight back to survive.

Two days after Marvin sees a glowing green thing like a flying birthday cake in the night sky, his third-grade class is joined by a mysterious new boy with peculiar behavior.

"An alien armada lurks on the edges of Teixcalaanli space. No one can communicate with it, no one can destroy it, and Fleet Captain Nine Hibiscus is running out of options. In a desperate attempt at diplomacy with the mysterious invaders, the fleet captain has sent for a diplomatic envoy. Now Mahit Dzmare and Three Seagrass--still reeling from the recent upheaval in the Empire--face the impossible task of trying to communicate with a hostile entity....

"Mr. Wuffles ignores all his cat toys but one, which turns out to be a spaceship piloted by small green aliens. When Mr. Wuffles plays rough with the little ship, the aliens must venture into the cat's territory to make emergency repairs"--

Zeke Zander, an alien from the Planet Z, must masquerade as a normal second-grader on Earth until his family can fix their spaceship.

Examines various explanations and evidence related to UFO sightings and alien encounters throughout history.

Daniel faces dastardly Number Two, who has slowly been amassing an underground army of aliens to help him enslave Earth's population in preparation for the arrival of Number One, the most powerful alien in the universe and Daniel's arch-nemesis.

When a disgruntled boy sees his mother being kidnapped by Martians, he realizes he loves her and will go to any lengths to protect her.

When a little boy meets a stranded alien child, the two quickly become friends, but at bedtime, the alien suddenly grows very sad, and the boy tries to figure out what his new friend needs to be happy again.