Hosts Jason Chambers and Bill Duff travel to Okinawa, Japan, the home of one of the most famous and deadly martial arts, Karate.
Their journey takes them to a 600 year-old castle where they spend time practicing Iron Body Training.
An ancient temple where they learn heart-stopping vital point strikes and go through training regiments of ancient Karate masters.
And finally leading to a Kumite (sparring match) with a real black belt, and Okinawan Champion fighter.
Watch the full documentary now