It is 1967 at the Metropolitan Museum of Art (The Met) in New York City. Mrs. Basil E. Frankweiler is a collector of fine art, facts, figures, and mysteries. She has recently donated a statue from her private collection to The Met.
Claudia and Jamie Kincaid, two children from Connecticut in search of adventure, have run away from home to live at the museum for a few days. They stumble across Mrs. Frankweiler’s statue and discover it may actually be the work of Michelangelo.
To add to her many files, Mrs. Frankweiler will now include the story of Claudia and Jamie’s adventure, their dramatic investigation of the statue and, in the end, their evolution into a terrific sister-brother team.