Scotland Street witnesses the wedding of the century of Angus Lordie to Domenica Macdonald‎,‎ but as the newlyweds depart on honeymoon Edinburgh is in disarray‎.‎ Recovering from the trauma of being best man‎,‎ Matthew is taken up by a Dane called Bo‎,‎ while Cyril eludes his dog‎-sitter and embarks on an odyssey involving fox‎-holes and the official residence of a cardinal‎.‎ Narcissist Bruce meets his match in the form of a sinister doppelganger‎;‎ Bertie‎,‎ set up by his mother for fresh embarrassment at school‎,‎ yearns for freedom‎;‎ and Big Lou goes viral‎.‎ But the residents of Scotland Street rally‎,‎ and order ‎- and Cyril ‎- is restored by the combined effects of understanding‎,‎ kindness‎,‎ and‎,‎ most of all‎,‎ friendship‎.‎