Multi-millionaire Paul Lister plans to turn his 23,000-acre estate at Alladale in Sutherland into an environmental oasis - a home for Scotland's native animals. He has fenced a 500-acre trial enclosure and released wild boar. One day the pigs may be prey for the wolves Paul wants to bring back, but first he needs to increase the herd's numbers. Estate manager Hugh Fullerton-Smith recruits alpha male Big Al for the job. Show less