“Chapter 23” is a psychedelic dystopian detective story that tells about the activities of the Main Sanitary Inspectorate, created immediately after the Second World War, which became the most powerful organization in the World, controlling everything and everyone. Sanitary inspector Denis Parkin will have to eliminate all the consequences of one emergency situation . This task will completely change his picture of the world and destroy the ground under his feet. At the same time, the door to a completely different, unimaginable reality will open.