Mattie James and her friends Nova, Rora, and Parker are back to take on a new threat even more dangerous than the T-Max. Attending the prestigious Armitage Institute’s STEM Camp, the team matches wits with billionaire tech mogul Galen Tacit who is desperately trying to find the codex Cache had given to Dr. Webb. Containing sensitive information about the origins of the T-Max, the codex cannot fall into the wrong hands. Cache and Zakara, meanwhile, have been tipped off on where Lord Vyrnatix’s may be hiding, but soon find themselves drawn into a dangerous game of cat-and-mouse as Vyrantix has plans of his own. And having been pushed out of her role at Project Greyshot, Dr. Webb must ally with an old foe in order to reach Mattie at the Armitage Institute where a mysterious adversary far more threatening than Galen Tacit lurks behind the scenes—one who can put the entire universe at risk with the information contained on Cache’s codex.