Like the streets of his 18th-century Paris home, Thomas Pichon's life is full of twists and turns. Despite winning his wife's forgiveness for an extramarital affair, Thomas and his lover, Hélène, are caught a second time, and decide that it's time for new beginnings – in London. As a writer, Thomas tries to make literary sense of the chaos of the life and language of a city teeming with excitement and danger. Hélène finds her own way out of the maze.