After her father returns from the war moody and tired, Marly's family decides to move from the city to Maple Hill Farm in the Pennsylvania countryside where they share many adventures which help restore their spirits and their bond with each other.

During the 1967 school year, on Wednesday afternoons when all his classmates go to either Catechism or Hebrew school, seventh-grader Holling Hoodhood stays in Mrs. Baker's classroom where they read the plays of William Shakespeare and Holling learns much of value about the world he lives in.

After finding a way to teach the ship's crew members to understand navigation, Nat, a self-taught mathematician and astronomer in eighteenth-century Salem, Massachusetts, writes down his explanations and compiles them into "The American Practical Navigator," also known as the "Sailors' Bible."