Four of Britain's most prominent aristocratic dynasties give cameras exclusive access to reveal what really goes on behind closed doors over one summer's social season. Lord Ivar Mountbatten and husband James open up their first ever pop-up restaurant at their stately home of Bridwell, while Lord and Lady Fitzalan-Howard hope to fund the exorbitant cost of running their 126-room home, the imposing Carlton Towers by turning part of their 3,000 acre estate into a vineyard.