A mysterious event causes nearly everyone on the planet to simultaneously lose consciousness for 137 seconds, during which people see what appear to be visions of their lives approximately six months in the future - a global "flashforward." A team of Los Angeles FBI agents, led by Stanford Wedeckand spearheaded by Mark Benford and his partner Demetri Noh, begin the process of determining what happened, why, and whether it will happen again. Benford contributes a unique perspective on the investigation; in his flashforward, he saw the results of six months of investigation that he had done on the flashforward event, and he and his team use those clues to recreate the investigation.
It's D-Day - April 29, 2010 - and while everyone waits to see if their flashforward visions come true, Mark uncovers the date of the next blackout, and Simon, with Demetri, attempts to stop it from happening by breaking into the NLAP mainframe.
Mark continues his interrogation of Hellinger in a desperate attempt to find out when the next blackout will occur; Demetri must choose between helping Janis and Simon break into NLAP to stop the blackout from occurring, or turning the fugitive Simon in to the FBI; Lloyd finds the common denominator that can help him solve the complex equation he was working on in his flashforward; while Tracy fights for her life, Aaron discovers why Jericho was after her; and Nicole wrestles over her strong feelings for Bryce and what would happen if she told him she knew the whereabouts of Keiko.
It's April 28 - the day before the prophesized flashforward date - and as the world waits to see if their future visions will come true, Mark must do everything in his power to protect Gabriel, who is the bridge between Dyson Frost and the Global Blackout; Aaron locates his daughter's captors and puts his life on the line in order to rescue her; Janis is tasked with killing a fellow agent; and Simon comes face to face with the head of the nefarious organization that may be responsible for the blackout.
Demetri and Agent Banks attempt to track down a killer as questions arise about the universe course-correcting itself, when people who thought they'd escaped their fates are found dead; Mark reluctantly agrees to help Simon find his sister, Annabelle, but discovers he's withholding the truth about her true circumstances; the FBI discovers the identity of Suspect Zero; and Nicole learns the whereabouts of Keiko - the woman in Bryce's flashforward - but struggles with whether to share this information, due to her growing feelings for him.
Janis continues to thwart her fellow FBI agents as an inside mole to a mysterious employer; Olivia is given some disturbing news by Gabriel, who has been subjected to numerous flashforwards; and Aaron's life is in danger in Afghanistan when he tries to blend in with the locals as he continues his search for his daughter.
