South-east England, 1740s: war and heated politics bring the old practice of smuggling to new and dangerous heights. Violent gangs of smugglers terrorise communities and confound government attempts to stop them. The most famous of these, the Hawkhurst Gang, operate like a modern drug cartel fuelled by illegal tea. They threaten witnesses and authorities, brandish weapons in public, and fight battles in the streets, murdering and kidnapping those who get in their way. Enter a world filled with gangsters, corrupt politicians, crooked law enforcement, and vigilantes, brought to the brink by Britain's most notorious smuggling gang.