Seed Nineteen - a bizarre name for the most bizarre characters ever to enter the lives of the Fantastic Four: Threshold, Fountain, Magnificent Brute, Dreamcatcher. These incredible entities hold the key to a cosmic conflict that has raged for untold millennia and now involves our quarrelsome quartet. You've never seen anything like it! Plus, the Ultimate X-Men team up with the Fab Foursome of the Ultimate Universe and the macabre Mole Man returns! Collecting Ultimate Fantastic Four #33-41, Ultimate Fantastic Four Annual #2, Ultimate X-Men/Ultimate Fantastic Four and Ultimate Fantastic Four/Ultimate X-Men.