Dash, Carly, Gabriel, and Piper visit a planet made up of molten lava and run entirely by robots where they must find the second element of the Source that will save the Earth.

Even though she knows her memories have been fabricated by the mysterious Dr. Styron, JD still has problems not believing them and struggles to learn what has happened to her and why.

Seventh grade gets off to a shaky start when Addie throws a back-to-school party in her basement and ends up face first in the punch bowl, and later realizes her friends have not always been truthful with her.

Addie Singer, a middle schooler with two disastrous science fair projects in her past, tries desperately to find a partner to work with her or risk failing science class, while at the same time she must deal with her sudden popularity--thanks to her participation in a social experiment.

Addie Singer is struggling to deal with all the changes in her life with the help of her guitar, her dog, and her two best friends, but she puts her friendships in jeopardy when she begins to take them for granted.