What if everyone on earth was a momentary prophet?
Suppose everyone on Earth fell unconscious for two minutes, and during that time, they all had dreams -- dreams that matched up with each other -- dreams that later experience showed were premonitions of the future?
What if the premonition you saw was something you didn't want to happen? Suppose you were living on the streets eating out of garbage cans? What if your wife and child had died? What if you were in prison for the murder of your best friend? How hard would you work to change that future? What would you give up to make it not happen?
When an unexplained event causes exactly that -- when everyone blacks out for 137 seconds, everyone gets a vision of what they will be doing six months in the future. Then they wake up to chaos -- crashed cars, planes, bathtub drownings -- all the things that can go bad in the world when suddenly no one is at the wheel for two full minutes.
What happened, who caused it, and was there a deeper ulterior motive at play? Was it intentional? Can it be controlled? Will it happen again?
From his "Flash Forward", and those of others, Los Angeles branch FBI agent Mark Benford and his people are able to piece together the 'when': April 29, 2010 at 10:00 PM PDT. But, from his own personal vision -- he's relapsed into alcoholism, his wife has left him with their child, and masked operatives are breaking into his office with a clear intent to kill... He wants very much for things to change.
The thing he and his fellow agents have to work on is an assemblage of different visions from different people -- a mosaic, as it becomes known -- of different events and different viewpoints of all the things going on months hence. ...But can the future visions be changed at all?
It's April 29, 2010, and less than an hour before everyone's flashforwards may or may not come true. While they wait, Mark enters FBI Headquarters despite a bomb threat and discovers the date of the next Blackout. Meanwhile, Demetri and Simon infiltrate NLAP to learn the identities of the conspirators, Lloyd insists he must be with Olivia to solve the formula, Janis goes to the hospital, Keiko and Bryce try to meet, Aaron worries about the fate of Tracy, and Nicole's flashforward of drowning comes to pass.