Chapter 1:

Hazel meets Augustus at a cancer support group, where they bond over shared experiences and humor. Despite her initial misgivings, Hazel is drawn to Augustus's charm and intelligence. Their flirtatious banter and Augustus's symbolic gesture with a cigarette deepen their connection, prompting Hazel to see him in a new light. Through their interactions, Hazel finds comfort and companionship in Augustus, gradually overcoming her reservations about forming relationships amidst illness.

Chapter 2:

Augustus and Hazel bond over shared experiences with illness and school challenges, revealing personal struggles and interests. Their connection deepens as they exchange favorite books and learn about each other's lives beyond their illnesses.

Chapter 3:

Hazel spends her "half-birthday" with her mother and reluctantly agrees to meet up with an old friend, Kaitlyn, at the mall. Feeling overwhelmed by cancer-related conversations, she seeks solace in reading and has a meaningful encounter with a young girl named Jackie.

Chapter 4:

Hazel rereads her favorite book, "An Imperial Affliction," about a girl named Anna living with cancer. She texts Gus about the book, leading to a conversation and a visit to Gus's house, where they find Isaac struggling with his recent breakup and blindness.

Chapter 5:

Gus and Hazel discuss the book "An Imperial Affliction" and Gus reveals he's made contact with the author, Van Houten. Hazel decides to email the author but learns he'll only answer questions in person. Gus surprises Hazel with a picnic and reveals he's using his wish from the Genie Foundation to visit Van Houten in Amsterdam, inviting Hazel to join him.

Chapter 6:

Hazel discusses her travel plans with Gus with her mother and Dr. Maria recommends Mrs. Lancaster accompany them to monitor Hazel's health. Hazel struggles with the growing intimacy with Gus, fearing she may hurt him due to her illness, and decides not to kiss him. She expresses her fears to her parents, who reassure her of their love and support.

Chapter 7:

Hazel wakes up in extreme pain due to fluid in her lungs, requiring urgent medical attention. After six days in the hospital, she allows Gus to visit, and he gives her a letter from Van Houten, affirming their friendship but cautioning against a romantic relationship. Hazel considers a trip to Amsterdam for answers, seeking advice from her parents and doctor on international travel.

Chapter 8:

Hazel's lung fluid buildup is attributed to Phalanxifor's side effects, preventing her from traveling abroad. Feeling down, she and Gus bond over selling her backyard swing set, and Gus's heartfelt words lead to a tender moment between them. Hazel later learns she's allowed to visit Amsterdam, bringing her joy.

Chapter 9

Hazel attends her support group before her Amsterdam trip, noticing changes among members. Isaac, still present, invites her to his house and questions her feelings for Gus. Hazel admits to liking Gus but fears hurting him, not being afraid of her own pain.

Chapter 10:

Hazel and her mom pick up Gus for their flight to Amsterdam, encountering an argument at his house. Gus explains his delay at the airport due to discomfort with people staring. During the flight, they discuss their feelings and watch a movie together.

Chapter 11:

Hazel and Gus arrive in Amsterdam and check into Hotel Filosoof. Despite fatigue, Hazel's mom plans to visit Vondelpark, but Hazel opts for a nap. Later, they have a romantic dinner at Oranjee restaurant, where Van Houten surprises them by covering the bill.

Chapter 12:

Gus and Hazel meet Van Houten, but he disappoints them with his rude and unhelpful behavior. Despite their frustration, they decide to visit the Anne Frank House with Lidewij's guidance. While there, Hazel overcomes her physical limitations to climb to the top and shares a passionate kiss with Gus, cheered on by bystanders.

Chapter 13:

Gus and Hazel share the news of their eventful day with Hazel's mom, who decides to give them space. During a walk, Gus reveals his devastating news about his cancer returning, his decision to restart medication, and his prioritization of their trip together, seeking forgiveness for not telling Hazel sooner.

Chapter 14:

Upon returning from Amsterdam, Mr. Lancaster picks up Gus and Hazel from the airport. Hazel discusses Gus's beliefs about the afterlife, while they also encounter Isaac, who has lost his sight and remains troubled by his past relationship. Gus decides to prank Monica, which results in a humorous yet tense situation.

Chapter 15:

The week begins with a joyful dinner between Hazel's and Gus's families, but Gus's health rapidly declines afterward, leading to a hospitalization and wheelchair use. Despite this, they eventually reunite outside the hospital, recalling happier memories.

Chapter 16:

Hazel spends her days with Gus, who struggles to eat and stay awake. They engage in activities like playing video games and going outside together, following a routine where she visits him in the afternoon, shares lunch with his parents, takes a nap, and returns home in the evening.

Chapter 17:

A month post-Amsterdam, Gus's health declines further, with Hazel finding him in a deteriorated state, wetting his bed and always fatigued. Despite his worsening condition, Gus desires to achieve more before he passes away, wanting a notable obituary, which Hazel finds insensitive, believing their time together should hold significance.

Chapter 18:

A late-night call from Gus prompts Hazel to rush to a gas station where he's stuck due to issues with his medication. Despite Gus's reluctance, Hazel calls an ambulance and accompanies him to the hospital, offering comfort by reciting poetry on the way.

Chapter 19:

As Gus's health declines, his family gathers around him, treating him differently due to his illness. However, Gus seeks normalcy and finds comfort in Hazel's humor and understanding, appreciating her ability to treat him like his old self.

Chapter 20:

Hazel continues to spend time with Gus, joining him at a church where the cancer support group meets. Gus asks her to prepare a eulogy, which she does, despite her parents' concern about her absence at home.

Chapter 21:

Gus passes away eight days after hearing eulogies from Hazel and Isaac. Hazel feels alone after his death, listening to messages left for Gus and posting about his true character, but finds comfort in her parents' embrace.

Chapter 22:

Hazel attends Gus's funeral alone, says her goodbyes, and feels infuriated by Van Houten's presence. She reluctantly gives him a ride but kicks him out due to his unpleasantness, returning home to continue grieving with her family.

Chapter 23:

Hazel visits Isaac and learns that Gus had been writing something for her. Intrigued, she drives to Gus's house to find the writings but encounters Van Houten in her family's minivan, who apologizes and shares about his daughter Anna. Despite sympathizing, Hazel kicks him out and searches for Gus's writings, but doesn't find them.

Chapter 24:

Mr. Waters informs Hazel about finding a notebook with some pages missing, leading her to search for them at the church. Despite not finding the missing pages, she attends a cancer support group meeting where she expresses her inner struggles. Later, her mother's revelation about pursuing a master's degree in social work brings Hazel a sense of hope and encouragement for the future.

Chapter 25:

Hazel seeks answers about missing pages from Gus's notebook, consulting with Kaitlyn and contacting Lidewij in Amsterdam. Despite distractions like a picnic, Lidewij eventually retrieves Gus's letter, revealing it to be his eulogy for Hazel, expressing his admiration and gratitude for her.