Jack Osbourne and his celebrity mates continue their quest to seek out the world's biggest adrenaline rushes. Jack is still in New Zealand with supermodel Jodie Kidd, actor John Thomson, and ex-Busted bandmember Matt Willis, where they undertake a gruelling 24-hour adventure race involving sea kayaking, cycling, waterfall jumping and running, followed by a terrifying bungy jump from a cable car. After Kayaking John quits and then it's left to Jack, Matt and Jodie to continue. Then They have to traverse from a huge rock or they face a 20 minute penalty. Soon it's back to biking then caving which they do with a heavy heart.

• Billy Boyd
• Elijah Wood
• Jesse Metcalfe