Belgravia, 1871. When Lord Frederick Trenchard meets Clara Dunn, their courtship is full of passion. But after they marry, the scandalous world of high society and a long-buried family secret threaten to unravel their happiness.

As London is submerged below floodwaters, a woman gives birth to her first child. Days later, she and her baby are forced to leave their home in search of safety. They head north through a newly dangerous country seeking refuge from place to place.