Her father passed away suddenly, and a 23-year-old female CEO came to power at the critical moment. There was a struggle for power internally, and there was an undercurrent of transnational undercurrents externally.
The new secretary seems to be well-behaved and cowardly, but he has another purpose when he joins the job. He gets closer and closer, just to secretly investigate the truth.
Only the secretary knew about this cold and charming female CEO - she was decisive in killing others, but she favored herself to the end.