Because Shen Zhijin, the second young miss of the Shen Manor, swaps bodies with modern white-collar worker Su Mengyao on the fifteenth of every month, she is forced to endure ancient messes such as pregnancy out of wedlock. Facing pressure from her entire family, she resolutely stays in the modern era. In modern times, relying on her genuine talent and resilience, Shen Zhijin resolves high-interest loan disputes and achieves a workplace counterattack. Meanwhile, Zhao Yanqing clears her name in ancient times. Ultimately, the soul-swapping ancient mirror shatters, Su Mengyao is burned to death, and Shen Zhijin shines brilliantly at the modern annual meeting, completing her counterattack and butterfly transformation.