Sixth-Grade Alien Books in Order

Tim's wish to travel in space comes true when he, Pleskit, Maktel and Linnsy become alien captives. Stranded on another planet amid a struggle for galactic control, the four must cooperate to survive and find a route home.

Classroom hamsters grow larger, stronger and more aggressive even after Pleskit stops feeding them alien vitamins. Tim and Pleskit must investigate another possible cause, identify an enemy and defend themselves against the increasingly dangerous pets.

Tim meets Beebo, a small alien stranded on Earth who wants to return home but cannot be revealed without risking diplomacy. Beebo's irresistible urge to cause mischief makes helping him increasingly difficult for Tim and Pleskit.

Pleskit worries about introducing visiting friend Maktel to Tim, while his father welcomes an elegant alien trader. Suspicions about the trader's intentions draw the children into an investigation that threatens both their friendships and the mission to Earth.

With the school science fair approaching, Tim turns to Pleskit for help creating a last-minute project. An alien potion meant to improve Tim's performance instead damages his personality, leaving Pleskit to face the consequences of his attempted assistance.

Rumors about the alien embassy spark demonstrations outside Pleskit's school as sixth grade nears its end. When Pleskit disappears, Tim and Rafaella must cooperate with bully Jordan Lynch to uncover the source of the attacks and protect the mission.

Pleskit and Tim borrow an alien shrinking ray to retaliate against school bully Jordan Lynch. Their prank goes wrong, reducing Tim and teacher Ms. Weintraub to miniature size and threatening the embassy's mission if the misuse of its technology becomes public.

Tim and Pleskit trade lunches, but peanut butter has an unexpected effect on the alien boy. An allergic reaction leaves Pleskit overwhelmingly lovestruck, creating problems at school that could jeopardize his chance to remain on Earth.

Alien student Pleskit loses his grandfather's preserved brain while also quarreling with best friend Tim. Stories about him are leaking to the press, and finding the missing family member becomes increasingly urgent when others may be searching for him too.

Pleskit, the alien ambassador's son, reluctantly enrolls in an Earth school, where Tim eagerly offers friendship. Their shared sense of being outsiders brings them together, but public hostility, cultural misunderstandings and interplanetary schemes threaten both their connection and the mission.

Pleskit brings his shapeshifting Veeblax to school to prove its abilities after a classmate challenges him. Frightening another student turns the unauthorized visit into an intergalactic incident, endangering his pet, his teacher's job and Earth's relationship with the aliens.

Mischievous alien Beebo Frimbat visits Tim and soon has his underwear flying from the school flagpole. The pranks become more alarming when Pleskit's bodyguard is trapped in a monster-filled dimension, raising questions about interference with the ambassador's mission.