The Children of the Atom meet the Mitey 'Vengers in this giant-sized collection of pint-sized super heroics! There's no pacifying Cyclops and Cap, who swap "ABC" for "AVX" as the playground becomes a battleground! Then, when Mojo kidnaps Wolverine to star in his arena of death, it's Longshot, Dazzler, and the uncannily cute X-Babies to the rescue! And when these junior X-Men stand up to the Brotherhood of Mutant Bullies in a murderous game show produced by Mojo and Arcade, will they be outdone by new kids on the block - or will one of their number dissolve back into the neoplasm from which they were formed? Plus: a gallery of Skottie Young's ever-adorable Marvel NOW! variant covers!