The SCARLET WITCH is back and her brother wants answers! Join QUICKSILVER as he races around the globe, hunting down the MIGHTY AVENGERS! Plus, what's HANK PYM'S problem with MR. FANTASTIC? And what does NORMAN OSBORN have in store for Earth's Mightiest Heroes? Guest-starring QUICKSILVER, and featuring appearances by the YOUNG AVENGERS and the FANTASTIC FOUR.