Angela Petrelli enters the Company's basement floor 5, where she sees Hiro Nakamura with his sword through his heart, Matt Parkman with his throat slit, Knox pulling Claire Bennet's head off, and Noah Bennet and Peter Petrelli also killed. She then sees Adam Monroe, a woman resembling Niki Sanders and Tracy Strauss, Maury Parkman, when Sylar puts his hand on Angela's shoulder from behind. Angela wakes up to realize this was a dream.

Claire Bennet realizes that she no longer feels pain, which she felt was all that remained of her humanity. Claire films herself trying to be hit by a train, but Future Peter (hiding his scar) flies down and saves her just before the train hits her; he then says that she needs to be careful, but that he also has to be careful with what he says to her, and then teleports away.

Meanwhile, two Company agents, Bianca Karina and Gael Cruz, attempt to capture Sylar. One fires a taser at him. He recovers and kills them both with a small hand gesture.

Tracy enters Nathan's hospital room to offer him a seat on the Senate. Nathan believes that Tracy is Niki Sanders, but she insists that she is not. Tracy leaves, somewhat disturbed, and Linderman appears, confirming that Tracy is not Niki, and advising Nathan to accept Tracy's offer.

At the Company, Elle Bishop finds her father, Bob's body with his brain removed. She then lets Noah out of his cell on Level 5, giving him a gun and telling him that Sylar is in the building. As Noah steps out of the room, Elle is telekinetically thrown down the hall by Sylar, so Noah shoots him several times. However, Sylar regenerates and explains that he's already taken Claire's power. After Sylar flings Noah away, he attempts to take Elle's power by cutting her head open. Elle screams and releases a large electrical discharge that knocks Sylar out and allows the Level 5 prisoners to escape their electronically locked cells.

Future Peter explains to Nathan that he is actually from the future and came to the present to stop him from revealing their powers and prevent the future he came from. Nathan then decides to ask Future Peter if he should accept Tracy's offer, but Future Peter tells him only to make the decision himself. Nathan proceeds to call Tracy and accept her offer as Future Peter leaves.

Tracy, walking to her car in the parking garage, is confronted by a reporter who tries to blackmail her to get her to admit she is Niki, a stripper from Las Vegas. Tracy defends herself and accidentally freezes him solid (revealing her new power, cryokinesis), and he shatters on the ground, dead. Tracy, horrified, flees the scene as the reporter melts down a storm drain.

Later, Nathan is playing a game of chess with Linderman when a nurse comes in to tell him it is time for lights out, and she comments that he can end a game of chess he's playing by himself. Linderman then reveals that only Nathan can see him.

Hiro and Ando travel to Daphne's apartment in Paris, looking for the formula that she stole. Hiro notices an award of Daphne's for a track meet from when she was young. When Daphne arrives, Hiro offers her the award, which he has now stolen from her, in exchange for the formula. Daphne pretends to agree to the trade, but then attempts to take both items. Hiro stops time, but she holds a knife to Ando's throat, since Ando cannot move, and starts to make a cut. Hiro allows her to get away with both items, but when time resumes, he explains to Ando about the tracking device he had slipped into the award. Ando, however, is notices his neck is bleeding, and is astonished that Hiro let him get hurt.

Maya returns to Mohinder's lab, and witnesses him hanging from the ceiling by his legs. She watches as he jumps down, unharmed, and climbs back up the wall, in an insect type of fashion, and after he explains his new powers, Maya expresses her excitement with the results of his new transformation. They then kiss passionately after Mohinder makes an uncharacteristically rash pass at her.

With Bob's death, Angela becomes the new head of the Company, and her first act is to implement some changes, starting with firing Elle. Noah Bennet, now released, returns to his home and prepares to deal with the escaped villains. To make sure Claire stays safe at home, Noah and Sandra enlist the aid of Claire's biological mother, Meredith Gordon, to protect the family in Noah's absence.

Future Peter teleports to Level 5, where Angela angrily informs him that the villains have escaped. Future Peter wonders how this happened different from his time, and also exclaims that he had trapped the present Peter in the body of one of the escaped villains specifically because this didn't occur in his timeline. Angela berates him about the butterfly Effect and blames him for the deviations he has caused from the future she has seen.

Peter Petrelli, trapped in the body of Jesse Murphy, is forced to accompany the other villains in order not to compromise his true identity. As Flint burns a woman alive, and Knox punches a man to death, Peter is forced to watch helplessly.

Mohinder wakes up, next to Maya, and appears to be feeling unwell. He goes to the bathroom and washes his face, and we see a strange affliction to his skin, which appears to be forming amber-colored scales. He questions, "What's happening to me?", as this seems to be an effect of the injection he gave himself to give himself powers.

Angela Petrelli ends the episode by going into the cell Sylar occupies and offers him the comforts that a mother should provide for a child. Sylar denies that Angela is his mother, but Angela persists that she is.

- credit to Heroes Wikipedia

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The episode begins four years into the future. Peter Petrelli, who has a scar on his face, is being chased and enters a hangar. Claire Bennet tries to shoot him, but Peter stops time and time travels to the present day.

At Nathan's press conference, future Peter shoots Nathan, as in "Powerless". Present-day Peter and Matt Parkman chase future Peter through the building, but future Peter appears to have escaped. Peter rushes Nathan to the hospital, and although he dies, he comes back to life after Peter kisses him on the forehead.

Peter encounters Matt, who catches him trying to find the gun future Peter hid. Peter's scar reappears, and he tells Parkman that he is from the future and teleports Matt away because he knows too much. Matt wakes up in the desert, with no one in sight.

Nathan walks out of the hospital to a church next door. A crew of news reporters follow him, and Nathan gives a short speech about how he was saved by God. Peter leaves, and Nathan gets another visitor: Linderman.

The governor of New York learns about Nathan on the television, and tells Tracy, who looks identical to Niki Sanders, that he thinks he has found who he is looking for.

Angela Petrelli visits Nathan in the hospital. She knows that future Peter is impersonating his past self, and tells Peter that he got the ability to dream the future from her. Future Peter tells Angela that he put his present day self somewhere safe.

At the Company headquarters, in one of the Level 5 prison cells, a bald man screams that he is Peter Petrelli. Noah Bennet is also locked up in an adjacent cell.

Claire watches the news reports about Nathan when Sylar arrives. Claire hits him on the head with a blunt object and tries to escape, but is stopped by Sylar. While Claire hides in a closet, Sylar finds Noah's files. He is stabbed by Claire, but he pins her against the wall, and starts cutting open her forehead.

Once he has cut off the top of her head, Sylar obtains Claire's power. Her skull heals, and Sylar says that she is special, and that she can never die, even if he wanted to kill her.

In his office at Yamagoto Industries in Japan, Hiro Nakamura tells Ando that he is bored without a quest. A video message from Kaito Nakamura is delivered to his office, which tells Hiro to never open Kaito's safe, which holds a secret. Hiro immediately opens the safe, and finds another video, with Kaito repeating that he was not supposed to open the safe.

Hiro finds one half of a molecular formula, which gets stolen by a blur before he can comprehend what it means. Hiro stops time to see that the blur is a trail left by Daphne, a speedster. Daphne moves at normal speed while time stopped, and comments that Hiro did not stop time completely. She hits him in the face and leaves with the formula as time resumes.

Hiro jumps to the future to see how the world is destroyed. He sees Japan in a panic, and himself talking to Ando, arguing about the formula. Future Hiro yells at Ando saying that Ando betrayed him. Future Hiro is ready to strike with his sword, when Ando shoots what appears to be red electricity at Hiro, apparently killing him. Ando takes the formula from Hiro's body and walks away. The sky opens up and the world starts exploding, and Hiro jumps back to the present.

Maya and Mohinder Suresh are at his apartment and he realizes that powers are controlled by the adrenal glands. Mohinder thinks he has isolated something that controls powers, and could give powers to anybody. Maya says the powers are a curse, and asks him to destroy the formula.

On the docks, Mohinder considers throwing away the syringe with the formula. Instead, he injects himself, and collapses. Two muggers attempt to accost Mohinder as he lays semiconscious on the ground. However, he exhibits superhuman strength, repelling the thugs.

In the background, there is a giant painting of the Earth exploding from the inside. In the closing scenes of the episode, Mohinder narrates the William Butler Yeats poem "The Second Coming", the title's namesake.

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