In this special programme 'Guy Martin', takes a rare week off work for a deeply personal crusade: to journey to the Baltics and uncover the truth about his late Latvian grandfather, 'Walter Kidals'. The exact details of Walter's early life have always been unclear and so Guy decides to find out what really happened to his grandfather. Driving a 30 year old Lada Riva around the Latvian countryside, Guy discovers the site of his grandfather's old home and school. Guy uncovers an extraordinary World War II tale involving forced conscription into the German army and witnesses a full scale battle re-enactment. Guy's trip finishes with an emotional reunion with his long lost Latvian cousins. The journey won't just help paint a picture about his grandfather's life, but it will also provide some answers about the origins of Guy's own unique personality.