"The Guernsey Literary and Potato Peel Pie Society" is set after World War II and follows Juliet Ashton, a writer searching for inspiration for her next book. She connects with residents of Guernsey, who share stories about their experiences during the German occupation. This correspondence ignites her curiosity about the island and its quirky inhabitants.
The book is structured as a series of letters, allowing readers to engage intimately with the characters. Each letter reveals personal histories, struggles, and the resilience of the people living in Guernsey. Juliet becomes particularly drawn to their tales of hardship and camaraderie, which deepen her understanding of the human experience during and after the war.