Toby wakes up to Jackson’s breakfast and asks him if he brought Hannah here to save him. Jackson doesn’t reply, so Toby assumes that he is correct. He also notices that Jackson is no longer fighting Toby on his love for Hannah, and Jackson admits that he was only 17 when he fell for Eden.

Toby senses that something has changed in Hannah. She asks why he didn’t take his shirt off the night before. Tonight, she takes his shirt off for him and tells him that his scars are just a sign of survival.

Toby wakes up next to Hannah and thinks about all he wants to do for and give her. He goes down to the beach and thinks about writing a poem but writes out the alphabet instead. Soon, Hannah finds him, and Toby asks why her family is a danger to him. She admits that her family kills people who “cross” them, and it strikes Toby how brave she is.

Hannah tells Toby that she figured out the poison tree poem was by William Blake. Hearing the name brings back a memory that Toby cannot quite reach, and hearing that he had sisters makes him wonder what happened to them. He tries to tell himself that all that matters is his relationship with Hannah, and they dance together in the moonlight.

Toby asks Jackson to bring him some items so that he can show his love for Hannah. He makes candles and writes a poem that creates a palindrome. When he gives it to Hannah, she isn’t quite sure how to react, as the poem clearly professes Toby’s idolization of Hannah.

Toby considers all the theories of time and decides to come up with his own instead. He posits that time has a mind and will of its own and observes how it changes when he’s with Hannah. They play a game where they describe cracks in the wall as constellations.

Toby and Hannah play a game where they jump across floorboards. Hannah uses the opportunity to turn it into another word game and spells a phrase traditionally used to begin a fairy tale.

Toby continues trying to decipher the maze in his dream and realizes that the voice in his dream is his mother’s. His parents locked him in a room alone to “detox” him from an addiction and offered no sympathy as he went through the experience.

Later, Jackson asks Toby when he plans to leave and insists that he take Hannah with him.

Toby and Hannah play checkers, and Toby thinks about how to ask Hannah to leave with him. Hannah tells Toby about her sister and how Kaylie had a zest for life that Hannah never felt until she met Toby.

Toby and Hannah play a game where they pretend to be up high and avoid looking down. When a storm approaches and it starts to rain, both Toby and Hannah share the sense that their time together is ending. Toby asks Hannah to come with him, but she says that she cannot without further explanation.

In the morning, Hannah goes to pack, and Toby prepares a special game of checkers. He talks to Jackson about his dreams and what he remembers about his parents. He remembers his mother’s name, but not his father’s. Jackson expresses love for Hannah and Toby and reminds Toby again not to let Hannah go.

Hannah comes back and tells Toby that they have to leave immediately. However, Toby convinces Hannah to stay for one more night. He reflects on how much he has changed, and how, despite remembering so little, he remembers everything about Hannah.

In the heat of romance, a candle is knocked over, and a fire starts. The word “kerosene” repeats itself over and over in Toby’s mind, and he feels as though he is falling. He remembers holding two cans of kerosene and the friends who were with him. He remembers that they wanted to take revenge on the Hawthorne family but ended up trapped inside the mansion. Toby hates himself and believes that Hannah should, too. When he tries to die by suicide on the cliffside, Hannah stops him and makes him promise to live.

Toby tells Hannah everything that he remembers about his life, including being adopted as a Hawthorne, how the Hawthornes murdered his father, and how he discovered his father’s grave. Toby also explains his fears of being “poison” like his parents and admits his involvement in the fire that killed Kaylie. Hannah accepts and forgives it all, but Toby cannot forgive himself.

Toby decides that he must leave because he knows his father will find him and Hannah eventually. He leaves Hannah a note and says goodbye to Jackson, who lectures Toby about hurting Hannah this way. When Toby leaves, Jackson implies that he sees him as a son.

Toby lives in alleyways and attempts to get by but quickly becomes indifferent to his own life. When he is stabbed by a man on the street, he doesn’t fight back or call for help; instead, he lies on the ground and waits to die, thinking of Hannah and the fairytale that they could have had.

Toby wakes up in a sterile room to the voice of his adoptive mother, who he thought was dead. At first, he thinks that she’s a ghost but then realizes that she faked her own death. Toby’s mother tells him that to protect Hannah from his father, he will have to circle the globe and lead his father astray. She also tells Toby that Hannah’s new name is Sarah and that she now lives in Connecticut.

Toby is in shock but realizes that he has no choice but to do as his mother says. All that matters to him is Hannah and keeping her safe, whatever that may mean. One day, an anonymous man stops Toby and hands him a message, alerting him that Hannah is pregnant and needs him now.

Toby goes to New Castle and finds Hannah at the diner where she works, but he does not go in. Later on, he goes to her apartment as a storm settles in. He decides that he should not bother her in her new life, but then the power fails, and he feels compelled to check on her. Toby finds Hannah in labor; she is relieved to see him, and he helps her through the birth. They name Hannah’s daughter, and Toby starts to see possibilities open up before him.

The ambulance comes to take Hannah to the hospital, but Toby’s mother stops him before he can follow. She warns him against raising someone else’s offspring and reminds him that he and Hannah can never be safe. Again, she tells Toby that he must leave Hannah and that life behind. Toby challenges his mother, but deep down, he knows that the threat is real.

Toby goes to the hospital feeling conflicted but knowing that ultimately, he cannot stay. He finds Hannah and her daughter safe and well, and though Hannah asks him to stay, Toby explains that he has to do everything he can to protect her. Hannah asks him to hold her daughter, and Toby thinks about how much he will always love them both.

Toby goes back to wandering the world and evading his father. He begins to accept himself and to see the beauty that Hannah always saw. He tells himself that in some way, in some time, he and Hannah will always be together. He continues writing to her, hoping that one day he will be able to deliver the postcards he creates.

Five years pass, and Toby returns to Connecticut. He sees Hannah and her daughter through the diner window and watches them. Later, he meets Hannah in the alley, where they play one of their old games again. Hannah kisses Toby and tells him that he can’t come back anymore, and Toby tells himself that knowing Hannah and her daughter are safe is enough.

Years in the future, Avery is a teenager, and Hannah has passed away. Toby visits her grave and mourns but forges an unlikely bond with Avery by meeting her for chess games in the park. Avery sometimes brings Toby food, and Toby gets to know the daughter he never had. He considers whether one day he might tell her who he is and the story of how he and Hannah fell in love.