Chapter 1: Introduction to the Tuck family - The Tuck family is introduced, consisting of Mae, Angus, Jesse, and Miles. - They are described as being different from other people and living in a secluded area. - The author hints at a secret that the Tucks possess.

Chapter 2: Meeting Winnie Foster - Winnie Foster, a twelve-year-old girl, is introduced as the main character. - She is dissatisfied with her life and longs for adventure. - Winnie’s family owns a large estate with a beautiful wood nearby.

Chapter 3: Winnie’s encounter with Jesse Tuck - Winnie decides to explore the wood near her house. - She comes across Jesse Tuck drinking from a spring. - Jesse warns Winnie not to drink from the spring, revealing that it grants immortality.

Chapter 4: The Tucks’ story - Winnie meets the rest of the Tuck family and learns about their immortality. - The Tucks explain that they drank from the spring many years ago and have not aged since. - They share their experiences and the consequences of living forever.

Chapter 5: The Man in the Yellow Suit - A mysterious man in a yellow suit arrives in town, asking questions about the Tucks. - He reveals his knowledge of the spring and his intention to sell the water for profit. - The Tucks become worried about the consequences of the spring’s discovery.