In the past, steamed bread was just a basic food for the general public, but now it has become a well-known commodity with a wide variety and a hundred schools of thought contend. But what exactly do we eat every day? "A mouthful of magic bags every day" leads the audience on an inspiring journey to explore the world of magic bags and the process of today's "bags". The film introduces the bakers of traditional handmade bags and the farmers who can ensure the quality and sustainable cultivation of the ingredients. At the same time, director Harrofeld also presented the baking production lines of large food companies, making great efforts to develop ready-made premix powder that can approach the real taste of the bag. Industrial production of steamed buns is rapidly reduced to food processing products. How can the art of baking bread be preserved? What will be the future of Bao Bao?