Kevin McCloud meets a pair of civil-partnered university professors who have decided to build their first home from scratch. In addition to all the complications this usually entails, Celia Brackenridge and Diana Woodward have also enlisted the services of industrial designers who have developed a new computer-assisted method for cutting precision-engineered building blocks from scratch. However, though the technique may be clever, its creators have never created a building before - meaning everyone involved with the project is taking a giant leap into the unknown.