Past Hiro meets up with his future self and they determine that they have to get Hiro back to the past so he can kill Sylar and stop the bomb. But before they can send him back, Matt shows up and captures Past Hiro because he thinks he's really Future Hiro and Future Hiro's a terrorist.
Matt works for Homeland Security, which is a fancy name for Nathan's Dirty Henchman since Nathan is now, in fact, the President. Nathan's employed Mohinder, who seems to have been tasked with finding a "cure" for the Heroes, but he's getting nowhere with his research. Nathan orders Mohinder to start annihilating all the Heroes as a precautionary measure.
Meanwhile, somewhere in Texas, Bennet and Hana Wireless are running a Hero relocation program, complete with fake DNA identification methods. Bennet no longer wears his signature horn-rimmed glasses. Future Hiro and Ando show up on Bennet's doorstep after going to Vegas to try and find Peter. Peter's there, but he remains invisible while they talk to his girlfriend, Niki (!). He also has a massive scar on his face. Niki doesn't want him to help Hiro and Ando, so he doesn't, which is why they go to Texas to ask Bennet for help locating Peter and all the other Heroes.
Bennet's too busy trying to SAVE Heroes to round a bunch up just for Hiro's purposes, and he's also trying to keep Claire from getting captured. She's a waitress at the Burnt Toast Diner now, and she's about to get married, so she doesn't seem to keen on hitting the road yet again just because her daddy is paranoid. She could do worse than listen to her father, though, since Parkman shows up at Bennet's "office" in order to capture the second Hiro.
Peter appears and saves the day, teleporting all of them outta there. When Bennet arrives, it becomes clear that he's worked out a twisted deal with Parkman that Parkman quickly terminates after learning where Claire is. And by "terminates," I mean "puts a bullet in Bennet's brain." Matt picks up Claire at the diner and takes her to see her real father.
After Nate orders Mohinder to kill Past Hiro, he heads off to the Petrelli Palace to see his super-powered daughter. He gives a speech about not needing any more powers, now that he has Claire and that's when we see blood appear on Claire's forehead and realize that Nathan isn't really Nathan, he's Sylar and he didn't blow up all those years ago.
Finally, Peter teams up with Future Hiro and Ando to bust Past Hiro out of his temporary prison before Mohinder can stick him in the neck with a needle. Just when we think Mohinder is going to kill the poor guy, he sticks The Haitian in the neck instead. He helps Hiro to escape, but not before Parkman shoots Future Hiro. Then Sylar shows up, and he and Peter get into a Battle Royale, as Mohinder and Ando convince Past Hiro to pull himself together and get back to the past so they can get on with the business of killing Sylar. In the end, Hiro makes it back and they're primed and ready to put a sword through Sylar's heart.
Copyright Television Without Pity, Uber Interactive and Early Girl

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ok so future hiro says that he stabbed sylar, but he regenerated 'cause he got to clare, BUT clare was clearly alive in this episode until the end. so how did sylar survive hiro stabbing him?
bennet is working in texas with someone called "hana wireless". who is she? is she the one who can morph into other people?
If peter petrelli can regenerate himself, why does he have a scar on his face?
i just know this show is going to do my head in! lol
good thinking hirosnstuff!
and i dont think anyone knows what he does with their brains to get their powers. though there are a few theories.