In 1930, Shanghai is rife with undercurrents. Before the blood-red dawn, a secret war that will decide the fate of the nation quietly begins.
Jiang Xinyue, newly returned from studying abroad, appears to be the cherished daughter of Jiang Shihong, commander of the Songhu Garrison. In truth, she is an underground Communist Party member. To thwart her father's plot, she poses as the wife of Zhou Shiwen, her former classmate, and goes undercover in Shanghai's elite circles.