There is nasty shock as the group members wake up to discover that former team-mate Luke has sabotaged their progress in exchange for £10,000 from the prize fund. Zac finds it hard to believe that his best friend would do such a thing and considers throwing in the towel, while newly elected leader Rowan is in the firing line. In the most testing of final days, can the team pull together, rebuild the bridge and reach the money?
