Each week a different multi-millionaire searches for people whose lives he or she can change for the better. Each of our modern-day philanthropists must guarantee to give away tens of thousands of pounds of their own money. For ten days, the millionaires leave their wealthy lifestyle behind and go undercover to live in some of the UK’s toughest areas. They conceal their true identities and immerse themselves in communities with the aim of finding those people that they think deserve to have the help of their time, their expertise and most importantly their cash. On the last day of their visit, they reveal their secret and make their gift.