Following her heart, Fifi moves with Dan to London where they rent a seedy flat in Dale Street, Kennington. Though Fifi must now become acquainted with squalor, she is soon drawn into the goings on behind the shabby front doors of her new neighbours. But it is the Muckles, at number 11, who are the street's focus. Rumours of criminal depravity and shocking behaviour are rife. So when Fifi steps in to help their youngest child, she risks the wrath of this frightening family. Suddenly, not only her marriage and her family but the lives of all the inhabitants of Dale Street are at the mercy of the immoral Muckles...