What is the human brain? The organ of the central nervous system, the supercomputer or host that controls human life? Synesthets involuntarily associate numbers and letters with colors or tastes. Seven for them - always blue, and the letter A - red. People with pro-spangosia do not distinguish faces: they see them, but do not remember. The authors began to shoot a film about modern brain research in search of an answer to the question: "Can I control my behavior, my physiology, my consciousness?"