After reuniting Sylar and Elle, Arthur orders them to find Claire and bring her to him. Meanwhile, Nathan and Peter Petrelli travel together to Haiti in search of the only man that can stop their father from destroying the world.
In the aftermath of the showdown against Arthur Petrelli, the Petrelli brothers find themselves battling against one another. Nathan makes a move that will have global repercussions.
Seeing a future where nearly everyone has abilities - a world destined for destruction - Peter resolves to prevent this earth-shattering end, whatever the cost.
As Danko spearheads the government operation, someone close to him is put in the line of fire. Meanwhile, H.R.G.'s life continues to spiral out of control.
Armed with H.R.G.'s old files and a taser, Claire attempts to take down her first target: Stephen Canfield - a Level 5 escapee with the ability to create black holes - unaware that others are closing in.
Deep below Primatech Paper, Peter's reunion with Nathan turns violent when the brothers Matt and Hiro all clash thanks to Adam and his pursuit of the deadly Shanti Virus.
The new and different Sylar pays Matt a visit, while Peter tries to warn Emma that Samuel isn't what he seems. Meanwhile, Noah begins his plan to infiltrate the carnival and capture Samuel.
With the election and NYC's destruction looming, Nathan has a disturbing face-to-face meeting with the shadowy Linderman. Meanwhile, Hiro's attempt to steal the sword steers him in a grim new direction.
With Isaac's horrible predictions all unfolding before them, the everyday people with extraordinary abilities face moments of pain and peril in Kirby Plaza with unflinching heroism.
Nathan must factor what he's learned from Linderman into difficult decisions that will shape the future - for him, his family, New York City and the world.
Thrown five years into the future, Hiro and Ando discover that people with extraordinary abilities are being registered, imprisoned, hunted and even killed.
Poised to become a member of Congress and maybe more, Nathan considers the cost to those he loves, along with his mother's advice and Linderman's prophecy.
Determined to find her birth mother, Claire makes her way to a trailer park in Texas. Meanwhile, Sylar makes a shocking move against H.R.G. - and his family.
While being held hostage, H.R.G. is subjected to Matt Parkman's unique brand of interrogation, revealing how he became involved with Nathan's government plot to capture those with abilities.
After receiving a tip from 'Rebel', Matt and Peter race to Building 26 to rescue Daphne and recover files that will expose the government's plans for those with abilities.
Trapped and terrified, Nathan and Tracy fight for their lives against a much-changed monstrous Suresh. Meanwhile, Elle returns with a shock for Claire and her family.
To prepare for the confrontation ahead, Hiro follows respected businessman Arthur Petrelli in the days before he 'died' to discover what drove him to create rival company Pinehearst and strike at Angela.
In Las Vegas, Hiro's plan backfires when he cautiously turns time to his advantage at the gambling tables. Meanwhile, Claire's uncanny healing abilities are put to the ultimate test.