"Pint-sized genius Lunella Lafayette takes on the Marvel Universe alongside some of its greatest heroes: Miles Morales, the Avengers and the X-Men. Because when Lunella's trusty T.Rex, Devil Dinosaur, goes missing, it may take all their helping hands to find him! Miles sure knows his way around Brooklyn. But when the Avengers detect rogue dinosaur activity in an unlikely place, they'll need Lunella's help -- and that means Moon Girl is on her way to the moon! But where will the search take her next? And how will the X-Men come to her aid? Don't miss this sensational new story from acclaimed writer Mohale Mashigo!"--back of cover.