This narrative investigates the profound spiritual and philosophical insights of a young child, Anna, as observed by her guardian, Fynn, during the 1930s. The author, Fynn, recounts his experience discovering a neglected four-year-old in London's Docklands and the subsequent years spent raising her within his family. The text serves as a record of Anna's unique, precocious perspective on existence, morality, and her personal relationship with a deity she calls 'Mister God.'

The text is widely regarded as a classic of inspirational literature, noted for its ability to challenge adult perceptions through the lens of a child's unfiltered wisdom. Its enduring popularity stems from the simplicity of its prose and the depth of the questions it poses about faith and human connection.