Sky News host and political commentator Rowan Dean presents a documentary special examining the phenomenon known as "cancel culture" and how it is threatening freedom of speech in Australia and around the world. Cancel culture is an insidious practice of stifling debate and has been likened to a modern-day lynch mob, where people who hold a different view are targetted, deplatformed, and silenced. Dean interviews people who have been subjected to cancel culture and why it must be opposed.