Ibrahim is a young Muslim guy walking from Cardiff to London. He has his own reasons, and his own mental and physical struggles to deal with along the way. What he hadn't counted on was a chance meeting with 75-year-old East Londoner Reenie before he's hardly started. With her life's luggage in a shopping trolley, complete with an orange tent and her pet cockatiel, Reenie is also walking the M4, and not for charity. As they share a journey their paths stretch out before and behind them into the personal and political turns of European history in ways neither could have foreseen.