George travels to Cornwall to meet Rebecca and Damian. The young couple are trading in their house for a debt free life in a cool luxury American trailer known as a Silver Streak. But with just ?ú10k to finish the job, can they transform this trailer from trash to vintage treasure? In Newquay, George meets inspirational 67-year-old ex-cabbie Caroline, who is single-handedly building a writing den in her back garden on a budget of just ?ú800 - created out of other people's cast-offs upcycled from the local dump. George's quest for the hidden architectural wonders of Spain continues in the breathtaking desert lands of Andalusia, where he discovers a stunning retreat. And George and master-craftsman Will Hardie are inspired by a state-of-the-art luxury mobile home, as they get to grips with their own big build.