George meets Sam, a conservation worker from Somerset who suffers from spinal muscular atrophy and is 30 years old. George is determined to change Sam's life by designing a fully accessible mobile home, allowing him to move freely inside as well as taking it on the road to travel the country. In Derbyshire, George meets James, a former pub landlord, who's building his new girlfriend a surprise house warming gift - a pub in their back garden. In New Zealand, George's travels to the island of Waiheke to see a modernist tent. And George and Will look for engineering inspiration for their futuristic rotating home.