In 'Undercover Miss Hong', Park Shin-hye's character faces identity exposure during a risky undercover mission at Hanmin Securities.

*This article contains content related to the drama's story. Park Shin-hye faced a crisis of identity from the first day of her undercover infiltration to search for the promised slush fund ledger from Choi Won-young. In the first episode of the new tvN weekend drama 'Undercover Miss Hong', which aired for the first time in Korea on the 17th, 35-year-old financial supervisory officer Hong Geum-bo (Park Shin-hye) conducted an undercover investigation under the identity of her 20-year-old sister Hong Jang-mi (ITZY Yuna). In 1997, Geum-bo exposed in court that her superior was receiving money from the investigation chief to overlook stock price manipulation. Due to the evidence she collected, both her superior and the investigation chief were punished, and Geum-bo was promoted to team leader. Her next target was Hanmin Securities, which had been robbing individual investors of their money and lives through stock price manipulation and slush fund creation. Geum-bo planned a raid on Hanmin Securities with Yoon Jae-bum (Kim Won-hae). The prosecutor promised a warrant if there was clear evidence. However, Hanmin Securities president Kang Myung-hee (Choi Won-young) approached her first. President Myung-hee said he was creating a new Hanmin Securities with a person named Yepira and was preparing a slush fund ledger for whistleblowing, handing over part of the evidence to Geum-bo as 'advance payment' to assist in obtaining the search warrant. Once the warrant was issued, Myung-hee directly instructed Geum-bo to 'take the slush fund ledger during the search'. However, the next day, Myung-hee died in a traffic accident, throwing the situation into chaos. Sympathy for Kang Pil-bum (Lee Deok-hwa), who lost his only son, led to the raid being canceled, and the prosecutor was assaulted, receiving a diagnosis of 12 weeks of recovery. Geum-bo was also almost kidnapped but managed to resist desperately, escaping the crisis when police sirens sounded. Jae-bum suspected that all the incidents, from Myung-hee's traffic accident death to the prosecutor's assault and Geum-bo's attempted kidnapping, were not coincidences. He directly proposed to Geum-bo a disguised infiltration mission to find the slush fund ledger at Hanmin Securities. Coincidentally, Hanmin Securities was recruiting female employees who graduated high school. 35-year-old Geum-bo transformed into a 20-year-old with the help of her sister Jang-mi. Jang-mi said, 'If you can't rent an adult video, then your transformation is successful,' and Geum-bo met Albot O (Cho Hang-kyul) for the first time while trying to rent an adult video. The two were trying to rent the same movie, and the shopkeeper asked Geum-bo, 'Aren't you a high school student?' and tried to lend it to Albot O. Geum-bo rejoiced at her successful transformation, applied to join Hanmin Securities as a high school graduate female employee, and ranked first in the written exam. Myung-hee's only daughter, Kang Eun-joo, also applied to join while hiding her identity and ranked last in the written exam. Geum-bo and Eun-joo were assigned to the same dorm room as Myung-hee's secretary, Ko Bok-hee (Ha Yoon-kyung). Bok-hee found a style book created by Geum-bo's sister Jang-mi among Geum-bo's belongings and became suspicious, asking, 'Who is Hong Geum-bo?' Geum-bo and Bok-hee had previously met by chance. When Bok-hee said, 'Isn't this a montage you know?' Geum-bo fell into a crisis of identity from the first day in the dorm.