The National Gallery of Australia has more than 100,000 works in its collection, from decorative arts to photography and sculpture, but only a fraction of these can be exhibited at one time. In this series of micro-docs, former director of the gallery Betty Churcher presents an insider's guide to some of the 'hidden treasures' that are rarely on public display. From her unique vantage point, she makes intriguing connections between a range of artworks and artists. These are fascinating tales about the works themselves, the people who created them and the challenge of preserving them, and a tantalising look at some of the ideas and influences that have shaped modern art across the globe.