Duke is on his boat looking at the gold doubloon that his father Simon left him as a birthday gift. He then goes through his family journal and finds the page where Simon wrote that Audrey must die. Attached to the page is a newspaper obituary clipping about Duke's grandfather, Roy Crocker, who died in 1955. Written on the back of the article are the words "Killed by Sarah Vernon." Next to it is an entry dated August 16, 1955 along with the name Stuart Mosley.
Duke goes to see Stuart, an old man working in his garden. As Duke starts to explain why he's there, Stuart gets a good look at him, says that he recognizes him, and makes Duke disappear. Duke finds himself on a beach and concludes that Stuart teleported him away. He tries to call but gets no service. When Duke takes the road into town, he comes to the Haven Shore Club and a parking lot full of 1950s cars. The people are dressed in clothing of the period and one of the locals confirms that it's 1955.
Duke goes into the club and gets a drink from the bartender, Junior. Soldiers and sailors are both in and a fight soon breaks out. When Junior tries to intervene, he almost falls on a shattered piece of wood from a broken chair. Duke instinctively saves him and the police show up and arrest him along with the others. At the station, Duke notices that a Guard member is under arrest. The deputy, Hank, points out that Duke has no ID and carrying counterfeit money. However, he explains that Junior has bailed Duke out.
Nathan finds Audrey on the street and asks her about what she found in Colorado. As she starts to explain, Audrey notices that a comic book store has replaced the Herald. Audrey asks Duke what's going on and he says that he's never heard of the newspaper. As far as Vince and Dave, Dave killed Vince fifteen years ago. Audrey realizes that someone has used their Trouble and she knows that time has been changed because she's immune to Troubles.
Duke asks the desk sergeant to help him find Stuart Mosley, and the man just gives him a phone directory and walks away. There's no listing for Stuart or Sarah Vernon, but Duke discovers that the Worldwide Post Delivery still exists.
Back at the station, Audrey checks the town history and discovers that everything is the same other than Vince's death. Nathan comes in and Audrey awkwardly confirms that he's still with Jordan, and she claims that it's good. She checks her mail and discovers an envelope from Duke via Worldwide Post Delivery, dated 1955. There are instructions on it to deliver it to her on 2012 on this specific date. Inside is a letter from Duke telling them that he's trapped in 1955, and they realize that he's the one changing the past.
Nathan and Audrey go to see Stuart and get no answer at the door. The officers split up to search and Nathan finds a photo of Stuart and his family on the porch and pockets it. Meanwhile, Audrey finds Stuart in his government and asks him if Duke was there. Stuart looks at her and says that she looks a lot like Sarah. He hesitates and then tells Audrey that she should go before he loses his control. Nathan comes up and Stuart sees him and recognizes him. The Troubled man makes Nathan disappear as well and tells Audrey to leave before he makes her disappear as well.
Back at the club, Duke thanks Junior for bailing him out. He needs cash to get around town and offers the doubloon in return for whatever Junior has in his pocket. Nathan comes in and tells Duke that they know he was sent back to 1955. The two men sit down at the table and order beers, and try to work out how Duke changed the future. Duke realizes that he saved Junior and Nathan says that is what must have somehow caused Dave to shoot Vince.
As they talk about whether Junior has to die to restore history as they know it, Junior comes over with more beer. Nathan comments on his nickname and the bartender says that his name is really Roy Crocker. Duke realizes that he saved his grandfather on the day that the journal said he would die. Once Roy goes back to work, Duke explains who Roy is and that the journal reveals that Sarah killed him on that day in 1955. Considering the matter, he realizes that if he kills his grandfather then his own curse will eliminate the curse from the Crocker bloodline... curing Duke. Duke realizes that he has no choice but to kill Roy and preserve their history, and keep an eye on him while Nathan goes to the station to contact the Guard prisoner that Duke mentioned.
Audrey calls Claire for help and the psychiatrist meets with her at Stuart's home. However, Claire tells Audrey that Audrey is wanted for murder because she shot and killed Reverend Driscoll. Audrey realizes that time has changed again and tries to explain, but Claire assumes that she's imagining a fantasy world to shelter herself from the guilt of murder. When Audrey mentions that Nathan is in the past, Claire explains that Nathan died protecting Audrey from Driscoll's men. Audrey wants to confront Stuart but Claire points out that Stuart doesn't live in the house for at least ten years. She tells Audrey that they have to get Audrey out of town because Driscoll's men are everywhere and killing the Troubled and anyone who helps them.
Nathan puts on his badge and goes to the police station. He sees a young boy playing outside and helps him with his Matchbox police cars. The boy says that he'll be a good cop someday and tells Nathan that his name is Garland Wournos. Nathan assures him that he will be a good cop and goes inside. Flashing his badge, Nathan gets the prisoner released and then talks with him about Stuart. The man says that Stuart is arriving by Ferry that afternoon and is rumored to be dangerous. Nathan says that he'll take care of him and leaves. He's unaware that Hank has been watching them. The deputy makes a phone call to the bar and tells Roy that the Troubled man that they've been waiting for is arriving in Haven. Roy reluctantly tells Hank that he'll do it and then puts a birthday card and the doubloon into an envelope for his son. As Roy leaves, Duke follows him to the pier.
At the docks, Roy meets hank and the deputy gives him a gun. When he says that Roy's victim is an injured war veteran in a wheelchair, Roy balks at shooting Stuart. Hank reminds him that the Crockers have always been killers but Roy tries to walk away. The deputy draws his gun and aims, but Duke knocks him out and tells Roy to run. Duke then hides Hank among the crates and goes to see Nathan on the pier. They discuss the situation and Duke admits that he saved Roy again rather than kill him. However, Duke realizes that Roy doesn't want to kill, just like Duke, and he suggests that they try and convince Roy to leave Haven so he will never meet Sarah and die.
A nurse helps the wheelchair-bound Stuart off of the ferry and Duke and Nathan realize that the nurse is Sarah: a red-haired version of Audrey. As Sarah takes Stuart to the VA hospital, Nathan tells Duke that he'll follow her. His friend warns that Sarah isn't the woman that they know and that they do know she's a killer.
Roy goes back to the bar and writes Stuart's name in the journal. Duke follows him and tells Roy that they have to talk.
Nathan goes to the hospital and enters Stuart's room. The young version of Stuart is in shock from his wartime experiences and Sarah comes in and orders Nathan out. She drags him out onto the street and threatens to strangle Nathan if he interferes in Stuart's treatment. Smiling at her pluck, Nathan tells her that she's incredible and starts to leave, but Sarah says that he can't just call a woman incredible and walk away.
Back at the club, Duke says that Roy should leave town, but the bartender says that all the money he has, he sends to his wife and son. Duke offers to give him a foolproof investment tip so that he'll have enough money to take his family to California, and Roy agrees as long as Duke can talk his wife into it. Duke goes to the bathroom and Roy goes to the phone to call his wife, rehearsing what he says. However, he notices a journal in Duke's jacket: the same journal that he has, with the same writing. Duke comes back out and Roy ambushes him, knocking him out from behind.
Nathan and Sarah go to the beach and she talks about her wartime experiences and that she's better than the doctors she worked with. He's surprised to learn that she's never been in Haven before and Sarah explains that she came there to be with Stuart, even though she's not sure what's wrong with him. Nathan tells her not to be afraid of what she can't understand and confirms that she doesn't know the Crockers. As they talk, Sarah says that there's something different about Nathan and that during the war, she learned to take advantage of any time that she had. Realizing where she's going, Nathan starts to leave and Sarah complains that she always picks the shy ones. After a moment, Nathan turns around and kisses her.
Roy ties and gags Duke and shows him the obituary clipping he found in Duke's copy of the journal. He demands to know what it means and who Duke is, ungagging his captor. Duke tells him that he's Roy's grandson from the future and that he hasn't been born yet. When Roy doesn't believe him, Duke describes exactly how their Trouble works. He insists that neither one of them want the curse and that Roy can change his fate. Roy agrees to change his fate and stay alive... by killing Sarah before she kills him.
A few minutes later, Nathan returns to the bar and finds Duke. Roy has left and Duke tells Nathan what his grandfather plans to do.
Claire leads Audrey off and explains that the Guard smuggle people out of Haven to protect them from Driscoll's people. Realizing that Audrey is telling the truth, Claire says that there's a man who can help her.
Sarah wheels Stuart out for some fresh air and she talks about how the war records say that Stuart's platoon died while under enemy fire. One year later, they walked out of the jungle and only seconds had passed from their point of view. The shell-shocked Stuart doesn't respond and Sarah tells him that he shouldn't be afraid of what he can't understand.
Claire reveals that the man who can help Audrey is... Chief Garland Wournos. Wournos promises Audrey that he'll get her out of Haven and she's touched by how they're both putting their lives at risk to save her. She explains where she's from and that Nathan is alive in that timeline but trapped in the past, trying to make things right again. Seeing the look on Audrey's face, Wournos realizes that he's dead in the original timelines. Before they can get away, Driscoll's men arrive and capture them at gunpoint.
Nathan goes to the hospital to warn Sarah that Roy is coming to kill her. When she wonders what he's up to, Nathan tells her to rely on her intuition. Sarah looks into his eyes for a moment and then says that she trusts him, and Nathan gives her a gun and tells her to leave through the basement and meet Duke, who has a car waiting. While Nathan watches over Stuart, Sarah should drive away from Haven and keep going until she hears that Roy is dead. Before she goes, Sarah kisses Nathan in case she never sees him again.
As Sarah makes her way through the basement, Roy steps out of the shadows with a gun and prepares to kill her. Sarah draws Nathan's gun and threatens to shoot him, but warns Roy that killing someone makes them hollow inside. Duke arrives to get Sarah and tells Roy that it doesn't have to end in death for anyone. He seemingly convinces them both to put down their guns. However, Roy goes for a knife and tries to throw it at Sarah, who snatches her gun back up and shoots hi. As Roy dies, he touches Duke with his bloody hand and his grandson's eyes briefly glow silver. Roy says that they can't escape fate and dies.
Duke goes upstairs to find Nathan in Stuart's room. Although they have restored history to its original course, and were perhaps destined to always do so, they are still stranded in 1955. Duke goes outside to get some air and Sarah gives Nathan her gun back. She explains that she saves people rather than kills them and doesn't want it. Nathan assures her that she didn't have a choice and Sarah insists on an explanation. He tells her that there are people in Haven who are cursed and says that Sarah can help them.
Sarah agrees to take Stuart off of the sedatives and try to get him to send Nathan and Duke back. Nathan tells her that she reaches out to the Troubled and figures out how they work. When he remembers that Stuart recognized him in 2012, Nathan realizes that it was because they met in 1955. He suggests that Stuart sends people through time to what he believes is a better place, and that he sent Nathan and Duke to 1955 for that reason just like he sent his platoon a year into the future after the end of the war. Nathan suggests that use the photo that Nathan picked up to convince Stuart that the future is a better place because he lives to be an old man and is surrounded by family. Sarah realizes that if she succeeds then it's the last time that she'll see Nathan. She worries that she can't help the Troubled alone and Duke returns and tells her to look up Vince and Dave.
Driscoll's men prepare to shoot Audrey, Wournos, and Claire.
Sarah shows Stuart the photo of his older self and says that he doesn't have to be afraid of the future. He looks at the photo and smiles, and then breaks into tears. As Stuart hugs Sarah in relief, Nathan picks up the discarded photo just as Stuart sends him and Duke away.
The posse leader shoots Audrey in the head... but the bullet reverses itself and Audrey finds herself back at Stuart's house with Nathan and Duke. Stuart is there tending his garden and Nathan and Duke quickly leave before he spots them. Stuart turns around and sees Audrey, commenting that she looks familiar. Rather than complicate things by acknowledging that he knew her as Sarah, Audrey says that she was looking for directions back to the highway and quickly leaves.
The trio joins back up and Duke figures that everything that happened was fate and nothing he did matters. Audrey tries to reassure him and Duke admits that he told Sarah to kill his grandfather. After Duke leaves, Audrey asks Nathan about Sarah, who explains that she was a nurse and had just arrived in Haven alone in 1955. She wonders if Sarah mentioned anything about a son and tells Nathan that the Colorado Kid was Sarah's son... and thus, Audrey's.
Sarah makes a call from a phone booth to her superior... Captain Howard. She reports that she got to Haven and believes that she can do a lot of good there. Sarah asks to stay and Howard agrees. As she goes back to the hospital, Sarah is unaware that Howard is actually just down the road, watching her as he talks to her on a portable phone.