The great heroes of the marvel universe are vanishing without a trace! What has happened to Spider-Man, the Thing, the Scarlet Witch, Captain America, and the rest of the MU''s heavy hitters? Spider-Girl, the fantastic five and a-next must join forces with today''s superstars to uncover the answer – and the trail leads to a major Avengers villain! Does the presence of the Watcher signify the end of this age of heroes?