In 1918, Philadelphia was a city teeming with promise. Even as its young men went off to fight in the Great War, there were opportunities for a fresh start on its cobblestone streets. Into this bustling town came Pauline Bright and her husband, filled with hope that they could now give their three daughters - Evelyn, Maggie, and Willa - a chance at a better life. But just months after they arrive, the Spanish flu reaches the shores of America.

Elise Sontag is a typical Iowa 14-year-old in 1943 - aware of the war but distanced from its reach. Then her father, a legal US resident for nearly two decades, is suddenly arrested on suspicion of being a Nazi sympathizer. The family is sent to an internment camp in Texas, where behind the armed guards and barbed wire, Elise feels stripped of everything beloved and familiar, including her own identity. The only thing that makes the camp bearable is meeting fellow internee Mariko Inoue, a Japanese-American teen from Los Angeles.

Sophie Whalen is a young Irish immigrant so desperate to get out of a New York tenement that she answers a mail-order bride ad and agrees to marry a man she knows nothing about. San Francisco widower Martin Hocking proves to be as aloof as he is mesmerizingly handsome. Sophie quickly develops deep affection for Kat, Martin's silent five-year-old daughter, but Martin's odd behavior leaves her with the uneasy feeling that something about her newfound situation isn't right.

Los Angeles, present day. When an iconic hat worn by Scarlett O'Hara in Gone with the Wind ends up in Christine McAllister's vintage clothing boutique by mistake, her efforts to return it to its owner take her on a journey more enchanting than any classic movie.... Los Angeles, 1938. Violet Mayfield sets out to reinvent herself in Hollywood after her dream of becoming a wife and mother falls apart, and she lands a job on the film set of Gone with the Wind.

As a young bride, Susannah Page was rumored to be a Civil War spy for the North, a traitor to her Virginian roots. Her great-granddaughter Adelaide, the current matriarch of Holly Oak, doesn’t believe that Susannah’s ghost haunts the antebellum mansion looking for a pardon, but rather the house itself bears a grudge toward its tragic past.