Beginning in a familiar garden setting, Alan peels back the layers of Britain's varied past. He travels to his native Yorkshire to reveal how innocent sounding place names provide evidence of a wild legacy. On Scotland's Isle of May, he discovers how white seal pups hold a clue to Britain's snowy heritage. Finally, Alan explores how diverse rock formations are a testament to Britain's turbulent past.

From Jurassic Oxford to Scotland's Himalayas, Alan explores the secret history hidden in the rocks beneath our feet. He discovers how Scotland and England drifted together from their original locations, near the Equator and the South Pole, and finds fossils which reveal that the Yorkshire Dales was once a sea with coral reefs.

Alan gets under the skin of the much misunderstood Neanderthal man, examines relics from the past and discovers that an ice sheet covering most of Britain stopped at London's Finchley Road tube station..

Alan ventures 50 metres below the Channel, scales an ancient tree in the New Forest and stalks red deer in Scotland to tell the story of how island Britain was created. He searches for clues across the country, discovering tropical nickar nuts in Scotland, palm trees growing at latitudes where polar bears should feel more at home and watching whooper swans in Cambridgeshire who arrive from Siberia for Britain's milder winters.