Adrenaline Junkies are obsessives who are hooked on danger in all shapes and forms. They rely on the performance from their speed machines to fulfill their dreams. These people can be found on land, in the sea and up in the sky. The Californian desert racers custom build their cars to go faster and faster over some of the most dangerous roads imaginable. Patrick de Gayardon and Barbara Brighetti practice extreme parachuting and sky surfing often reaching speeds of over 120 mph; and meet Shaun Baker, an extreme kayaker who takes his canoe over waterfalls. These adrenaline junkies are always just one step away from disaster, always pushing both man and machine to the limits of their endurance.