She's been so busy worrying about the Terrigen Cloud that would turn her Inhuman, Luna Lafayette might instead fall prey to...Cosmic Cooties?! Because when a new boy moves to town from far, far away, he's oddly interested in her. Meanwhile, the most wanted T-Rex in NYC is running out of places to lie low - a problem that won't get any easier when our darling duo undergo a body swap! It's a big change up that will see Luna spending a freaky Friday (or whatever day it happens to be) as Devil Dinosaur, and vice versa! Will Luna evade capture? Will DD scrape a passing grade on his test? And who exactly is Moon Girl's new 9-year-old archnemesis, Kid Kree? As his plans unfold, there'll be major revelations about Luna's abilities!