In Shanghai in the early 1940s, a pair of sisters played by Zeng Li and Zhang Meng suddenly encountered a change in the destruction of their families, and thus embarked on a completely different path of life, the sister became a communist party member with firm ideals, and was ordered to break into the Kuomintang Central Bureau as an undercover agent, while the younger sister was transformed into a fierce Kuomintang female agent, six relatives did not recognize, killing countless people. The sisters suffered many tests of affection and love in turbulent times.

Zeng Li plays Song Jenny
Zhang Meng plays Song Dani
Zhang Ruijia plays Lei Sister-in-law
Cao Xiaowen plays Su Mei
Chen Zihan plays Ah Wen