After ten years of absence, Vivien Walker returns to the city of her childhood from sunny California and settles in a cozy estate by the river. She has a painful breakup with her husband behind her, and she hopes that her native place will help her survive the loss. But the first days bring only disappointment - the house is empty, her grandmother has died, everything around has completely changed, and even the old cypress tree, in the shade of which Vivienne “listened to the song of the swamps” in her youth, was destroyed by a merciless tornado.

Natural disaster prompts Vivien to remember another incident - in 1929, her great-grandmother, the wife of a watchmaker, disappeared during the Great Flood. This story is shrouded in mystery, and Vivien decides to do a little investigation to have fun. But as soon as she took a careless step, the mystery took a very unusual turn...