Dr. Gema Cross has spent her career building a revolutionary device designed to help patients heal their most painful memories. When it misfires, she is thrown back to 1920 Tulsa, Oklahoma, carrying knowledge no one in this century should have. She is rescued by Dr. Houston Whitaker, a man who has been hiding in plain sight for so long he has nearly lost himself entirely. Gema finds herself drawn to the beauty of Black Wall Street and to a connection she stopped letting herself want.

But their love grows impossible as Jim Crow draws the boundaries of their world in brutal, unforgiving lines. Gema knows that the city she has fallen in love in, the life taking shape between them, will be ash before the year is out. She knows what is coming for Greenwood. And it is coming faster than she prepared for.