All things must come to an end--even sixth grade. But not all things end happily, and it looks as if Pleskit Meenom's year as a sixth-grade alien is about to end in catastrophe as Earth is swept by rumors of alien abductions. Soon anti-alien demonstrations erupt outside Pleskit's school.

Who is behind the rumors? Is there really a secret enemy on the embassy staff? What happens if the mission fails?

When Pleskit disappears, those questions take on new urgency. Desperate to answer them, Pleskit's friends Tim and Rafaella are forced to team up with Tim's old enemy, Jordan Lynch, to save the mission...and Earth!