There is a bottle of wine on the table. A table, a bottle, and wine: there seems to be a clear distinction between the three just like the words. But when looked very closely, the boundary is merely a temporary and fragile state of millions of particles. As a matter of fact, things with clear boundaries are rare in real life. There are almost always overlapping realms, especially in thoughts and human relationships. When you step away, the boundaries naturally appear like clouds seen from afar. Volume is an optical recording of bottles experimenting with this idea by exposing the presence of particles in the visual image.