Even down to its well-set Georgian townhouses, Edinburgh is a hymn to measure and harmony.But on Scotland Street, domestic accord is in short supply.Matthew and Elspeth welcome three new arrivals, though the joys of multiple parenthood are somewhat lost due to sleep deprivation and the difficulties of telling their brood apart.Angus and Domenica are to marry, and Domenica has ambitious and disturbing plans for their living arrangements, especially when it appears that Antonia, in Italy recuperating from Stendhal Syndrome, may not return. And little Bertie, feeling blue, puts himself up for adoption on eBay.Can Edinburgh's most deliciously dysfunctional residents forsake discord and learn to dance to the same happy tune?