Five year in the future, Hiro and Ando go to Isaac's loft and find articles and photos strung to the ceiling, all connected by string. Hiro hears someone behind him and turns to confront... his future self, wielding a sword. Future Hiro says they're not supposed to there and that the explosion happened despite their efforts in the past. Sylar exploded, destroying half of New York City, and changing the world. Future Hiro explains that the articles and string are his attempt to map out the events leading to the explosion. He's trying to find the precise point in time to travel back to and change the future. When he mentions Claire, Hiro says that Peter saved her. Future Hiro asks if he's killed Sylar yet since the killer lacks Claire's power to regenerate, but Hiro informs him that he hasn't killed Sylar yet. Future Hiro tells him that he needs to go back in time and kill Sylar on the day of the explosion. He attempted to do so but in his timeline Sylar had Claire's ability and was unkillable. Hiro warns his future self that he can't control his powers...Read the full recap
Santiago Cabrera (Isaac Mendez), Noah Gray-Cabey (Micah Sanders) and Leonard Roberts (D.L. Hawkins) are not credited and do not appear in this episode.
Working Title: "String Theory"
According to Sendhill Ramamurthy, it took him three weeks to grow the beard that Mohinder sports in this episode.
Ratings: 11.92 million viewers
(talking about Future Hiro)
Hiro: I look upset.
Ando: Go. Talk to yourself.
Hiro: No way. I scare me. You do it.
Future Hiro: Save the cheerleader...
Hiro: ...save the world.
Matt: How can you not remember that?
Hiro: Because I have no idea what you are talking about.
Nathan: In your original assessment you posited a possible solution. Extinction.
Mohinder: Yes, but I never meant to suggest that….
Nathan: (reading the report) “They wouldn’t be the first species to be exterminated for the preservation of another.” Your words.
Mohinder: I was talking about the natural order of things. What you’re talking about is genocide.
Mohinder: You're one of them, Nathan! Are you suggesting I should send you off to the gas chambers as well?
Nathan: Please. I can fly. I wouldn't consider myself dangerous.
Hiro: (to Parkman) You are like me. Special. Why do you want to hurt other special people?
Ando: You've always wanted to become a kendo master.
Future Hiro: I studied in Tohoku, so technically I'm a Battojutsu master.
Mohinder: Hiro Nakamura can stop time. Teleport by folding space. Theoretically, he can fold time as well.
Matt: So you're saying he's a time traveler.
Mohinder: Is that any stranger than being able to read someone's mind?
Matt: Yeah, it is.
Peter: Do you remember how he used be — all full of hope and optimism?
Ando: Of course, that's the Hiro I know."
Peter: It went away the day you died. Between you and me, I think you're the reason why he became so obsessed with changing it all back. He wants to save you.
Peter: (to Niki, in the future) Because it was me! The bomb -- it was me. I killed all those people. I killed Micah.
Ando: Is everything okay?
Future Peter: No. Let's go fix it.
Future Hiro: Should we freeze time?
Future Peter: Nah, I haven't had a good fight in years.
Hiro: No, Future Me! He's good guy!
Peter: You will pay for what you did to Nathan. What you did in his name!
Sylar: What I did? When I killed your brother, he had already turned against his own kind.
(after arriving back in the present)
Hiro: Now for the hard part.
Midway through the episode, a guard takes Ando and holds him by the neck. When the shot returns, Ando is free.
When Future Hiro and Ando run from the Homeland Security building, Hiro tells Ando to take his clothes off. As Ando begins to take articles of clothing, the amount he has on changes between shots.
Characters' Lives in the Future
Hiro Nakamura: Hiro is a wanted terrorist who opposes the Petrelli administration and its efforts to suppress the human rights of "evolvedhumans."
Claire Bennet: Claire is living under the name Sandra and working in a diner in Texas. She has dyed her hair dark brown and is currently engaged to the diner's owner, Andy.
Mr. Bennet: Bennet is assisting harmless "specials" by providing them with new identities and fake blood samples, while turning over dangerous ones to Homeland Security.
Matt Parkman: Matt is working with Homeland Security to track down all people with abilities. His wife has divorced him and he has had no contact with his child.
Mohinder Suresh: Mohinder is the President's advisor trying to come up with an antidote to the gene that causes the abilities.
Nathan Petrelli: Nathan is the President of the United States, .
Niki Sanders: Niki and Peter are married and Niki works as a stripper in a bar.
Peter Petrelli: Peter is married to Niki. He still possesses his abilities, but does not have any interest in helping Hiro save the world.
The Haitian: The Haitian is working as an operative with Homeland Security.
Sylar: Sylar .