A machine promises guaranteed happiness, but its prescriptions are often disturbing. Pearl works for Apricity, a company that develops machines designed to optimize human happiness through personalized, often drastic, recommendations. Her own son, Rhett, resists the machine's influence, leading Pearl to question her role as both a mother and an employee, and her own belief in the pursuit of happiness.

The book is described as philosophical, funny, cleverly structured, and unpredictable, drawing comparisons to 'A Visit from the Goon Squad' and 'Where'd You Go, Bernadette'. Its warm, witty, and charming tone is highlighted, suggesting a narrative that balances humor with deeper explorations of happiness. The premise of a machine dictating life choices for happiness is presented as a central, thought-provoking element. The reception suggests a novel that engages readers with both its style and its thematic concerns.