You need to read the first book to understand the second. There are very small 41 chapters with a 21a and 741 chapter. It has some websites like book 1. In this book Michael K. and three spaceheadz aliens (Bob, Jennifer, and a hamster Major Fluffy)are trying to get 3.14 million and one Earth people (the spaceheadz say persons) to become spaceheadz or else the Earth gets turned off. Two other fifth graders named Venus and TJ join the campaign to sign up SPHDZ. Agent Umber from the Anti Alien Agency (AAA for short) is still trying to track down the spaceheadz. It's up to Michael K., Venus, TJ, and the spaceheadz to stop Agent Umber and stop the world from being turned off.