Michael Portillo embarks on a series of journeys through London. He travels on the capital's first underground railway, the Metropolitan Line, from Amersham, where he discovers the foundations for modern-day suburbia. In Pinner, Michael finds out about a Victorian domestic goddess and whips up a pint of her fanciest ice cream. In Highgate, Michael investigates the terraced catacombs of one of London's vast 19th-century cemeteries. At Baker Street, he comes face to face with Isambard Kingdom Brunel before experiencing a hot wax at first hand. He ends this journey with a trip to the zoo at Regent's Park.