Part of the “Flight Safety” series of animated shorts commissioned by the U.S. Air Force at the end of World War II. This one tells the story of the human body's sensory system, including the operation of the inner ear. The film tells the story of Hank Morgan, a man of "unwavering power and concentration" and takes a peek inside his head to see how decisions are made. Unfortunately for Morgan, he trusts his inner ear and not his instruments, leading to a near crash.