Ep 3. Episode 3

Seo Nayun, No Eunsol's older sister and the Vice President of DN Group, learns that her father is hospitalized after collapsing at the company. She rushes to the hospital, where her stepmother, Hong Shiljong, is already waiting. Nayun becomes enraged when she discovers that Shiljong did not inform her of their father's condition.

Meanwhile, Cha Jihun, the new secretary of DN Group's CEO, has difficulty adjusting to his job. He struggles to keep up with his boss's unpredictable behavior and the demands of his colleagues. He also finds himself at odds with Eunsol, who believes he is an incompetent secretary and a threat to her job.

Jihun receives an assignment from CEO Cha Muwon to investigate a courier company that is failing to deliver DN Group's packages on time. Jihun suspects that the courier company is involved in a scam and asks Eunsol to help him gather evidence. Eunsol agrees, but only if Jihun will teach her how to be a better secretary.

As Jihun and Eunsol work on the investigation, they encounter obstacles and nearly get caught by the courier company's employees. However, they manage to collect enough evidence to prove the company's guilt.

At the end of the episode, Nayun confronts her stepmother about her father's condition. She accuses Shiljong of neglecting their father's health and prioritizing her own interests instead. Shiljong defends herself, stating that she has been working hard to keep the company afloat and that their father's health is not as urgent as Nayun thinks.

However, Nayun is not satisfied with Shiljong's explanation and warns her to stay away from their father. As Nayun leaves the hospital, she encounters Jihun and Eunsol, who are also leaving after completing their assignment. Eunsol greets Nayun and introduces her to Jihun as DN Group's new secretary. Nayun is surprised to see Jihun and recognizes him as the man who helped her retrieve her shoe in the previous episode.