When Irene returns to Scotland Street from an involuntary holiday abroad, she discovers that her sweet little Bertie has been exposed to exactly those things of which she strongly disapproves, including sentimental movies and multi-topping pizza. Her wrath falls upon her unfortunate husband, Stuart, leaving Bertie to consider moving out of Scotland Street altogether to live with his grandmother. Will Bertie move, and can Irene and Stuart's marriage survive ? Bruce falls in love - with an Australian extreme sports enthusiast - but will it last ? And, elsewhere, Matthew and Elspeth host the mysterious Duke of Johannesburg for supper. Can the deliciously entertaining residents of Edinburgh's most beloved street negotiate all these challenges and find happiness once again ?