Andy Critchlow surprised his girlfriend Ana Perkins when he bought a stunning, cylindrical Grade II listed water tower in Congleton, Cheshire at auction - without even seeing the inside. Surprise! Andy dreams of converting this building into an uber-modern 21st century home, which means selling their current property and moving in with his parents for the entire nine month build. As a director of his own architectural practice, Andy tackles the build with huge drive and determination, but at what personal cost? Meanwhile George goes on a historical mission and discovers how this monumental landmark sitting proudly on a Cheshire hill saved the lives of the people it overlooked.