The campaign to save the earth from being turned off is going well, but Michael K. must enlist fellow fifth-graders Venus and TJ to help hide the SPHDZ from Agent Umber, especially when they become involved in a school play.

Tandy Angel is, along with her brothers, a suspect in their parents' murder but having grown up under Malcolm and Maud Angel's perfectionist demands, Tandy decides she must clear the family name no matter what.

On his first day at Brooklyn's P.S. 858, fifth-grader Michael K. is teamed with two very strange students, and while he gradually comes to believe they are aliens who need his help, he has trouble convincing anyone else of the truth.

Rosy plans to show her small-town cousin all the amazing sights that make New York City such a great place to live, but things do not go as she had hoped.