Bertie's respite from his overbearing mother, Irene, is over. She has returned from the middle-east, only to discover that her son has been exposed to the worst evils of cartoons, movies and Irn Bru, and her wrath falls upon her unfortunate husband, Stuart. Meanwhile, Bruce has fallen in love with someone other than himself; Big Lou wants to adopt her beloved Finlay; Matthew and Elspeth host the Duke of Johannesburg for supper and Bertie decides he wants to move out of Scotland Street altogether and live with his grandmother, Nicola. Can Irene and Stuart's marriage survive? Will Bruce's newfound love last? And will Bertie really leave Scotland Street?