A year ago, Reed Richards sent a whole city block the Baxter Building stands on - along with his own children and the children of his best friends Ben and Alicia - a year ahead in time. It was a desperate measure, but it saved them. And now, it's time for them all to come back. But when the Fantastic Four arrive in NYC, they find something is being built in the pit where the block once stood - and worse, nobody seems to know exactly what it is or why they're building it. With the clock ticking, they investigate this mystery - and discover a mysterious new threat that may have been pulling the strings this entire time…