In Stirlingshire, architect Bobby Halliday is taking on a huge development of bespoke homes on the site of an old farm steading in the shadow of Stirling Castle. As if juggling the ups and downs of such a huge build wasn't enough, he has to make sure that a house is ready for a client to move in to every three weeks. In this episode he is dealing with a couple whose move-in date is four days before Christmas. It all seems to be going according to plan until the building inspector turns up and throws a very big spanner in the works. Will Bobby be able to put things right and get the couple in in time for Christmas?In Cardiff, architect Dan Benham is designing an amazing one-and-a-half-million-pound family home. But as the build is delayed and deadlines fall by the wayside, will the stresses between architect and client threaten to derail the project?