Susanna, George, and their eight-year-old daughter, Dina, have been lucky, so far, in these four years since war broke out in their country. Even as their fellow "minority-sect" neighbors and classmates are murdered or imprisoned, George’s loyal work teaching "dominant-sect" literature has kept them fed and protected. But then the day comes: the university fires George—despite his years of collaboration, he is no longer safe. Left without money or allies, it is time for the family to run.

Yeongju did everything she was supposed to, go to university, marry a decent man, get a respectable job. Then it all fell apart. Burned out, Yeongju abandons her old life, quits her high-flying career, divorces her husband, and follows her dream. She opens a bookshop. In a quaint neighbourhood in Seoul, surrounded by books, Yeongju and her customers take refuge. From the lonely barista to the unhappily married housewife, and the writer who sees something special in Yeongju - they all have disappointments in their past.

Cora Zeng is a crime scene cleaner, washing away the remains of brutal murders and suicides in Chinatown. But none of that seems so terrible when she’s already witnessed the most horrific thing possible: her sister, Delilah, being pushed in front of a train. Before fleeing the scene, the murderer shouted two words: bat eater. So the bloody messes don’t really bother Cora—she’s more bothered by the germs on the subway railing, the bare hands of a stranger, the hidden viruses in every corner, and the bite marks on her coffee table.

Haiwen is buying bananas at a 99 Ranch Market in Los Angeles when he looks up and sees Suchi, his Suchi, for the first time in sixty years. To recently widowed Haiwen it feels like a second chance, but Suchi has only survived by refusing to look back. Suchi was seven when she first met Haiwen in their Shanghai neighborhood, drawn by the sound of his violin. Their childhood friendship blossomed into soul-deep love, but when Haiwen secretly enlisted in the Nationalist army in 1947 to save his brother from the draft, she was left with just his violin and a note: Forgive me.

We begin with a nameless young couple: a boy and a girl, teenagers in love. One day, she disappears . . . and her absence haunts him for the rest of his life. Thus begins a search for this lost love that takes the man into middle age and on a journey between the real world and an other world—a mysterious, perhaps imaginary, walled town where unicorns roam, where a Gatekeeper determines who can enter and who must remain behind, and where shadows become untethered from their selves.