Alien Spaceheadz approach their goal of recruiting 3.14 million + one Earthling SPHDZ...can they save Earth!? Fifth grader Michael K. and his human friends Venus and TJ have done a whizbang job of helping advertisement-spewing, oddball aliens Bob, Jennifer and Major Fluffy (their leader and hamster) recruit. The SPHDZ counter falls only a bit short, so Bob and Jennifer decide to ask Santa Claus for the final SPHDZ needed to save the Earth from being turned off. Little do they know, the Santa they're waiting in line to see is none other than Agent Umber of the Anti-Alien Agency! Michael K. co. avert disaster, and the SPHDZ Counter hits its goal...then starts counting backwards! Evil Aliens are stealing the earthlings' Brainwave (the sum of the collected SPHDZ) for their own nefarious ends! Feeling betrayed, Michael K. gives up. Meanwhile, Mom K. and Dad K.'s secret lives (ZIA Agent and Secret Ad man) are on a collision course. Can Spaceheadz with unlikely allies get Michael K. back on board and save the cosmos? Scieszka and Prigmore deliver the most madcap installment yet in their uber-illustrated series. Surprise villains (foreshadowed in previous volumes)! Surprise interstellar-parking-lot plans! Surprise doughnut upchuck! Nonfiction interludes on networks, group intelligence and symbiosisnot to mention the goofy websitesadd to the fun. Fans will be in heaven, especially at the certainty of further installments.(Humorous science fiction. 7-10)]] Copyright Kirkus Reviews, used with permission.

In this third entry in the Spaceheadz series, an imperiled world once more relies on rescue from Brooklyn fifth-graders Michael K. and his friends, along with aliens who are disguised as fifth-graders (although one of the aliens, Major Fluffy, is passing as a hamster). Meanwhile, Agent Umber of the AAA (Anti Alien Agency) is on a nonstop campaign to thwart the Spaceheadz. Finally, a tough-talking, military-type Santa recruits Michael K. into a search for a stolen brain wave, leaving the Spaceheadz well poised for their next adventure. As with the other books in this series, the plot is secondary to the slapstick gags and general mayhem. With plenty of twists, lots of well-timed comic noises, and even a hilarious section narrated by Major Fluffy, this is sure to delight fans, while recruiting new ones. Another laugh factory between covers.--Morning, Todd Copyright 2010 Booklist