Park Shin-hye leads a dynamic ensemble in TVING’s new weekend hit, Undercover Miss Hong. The workplace comedy, which launched on January 17, 2026, follows a top financial inspector who goes undercover as a young intern at a suspicious securities firm. The show blends investigation with comedy as she navigates corporate life and a complicated reunion with her ex-boyfriend.
The Main Cast of Undercover Miss Hong
The drama centers on a sharp financial inspector and the people who complicate her secret mission. Each character brings a unique dynamic to the story of corporate investigation.
Park Shin-hye stars as the title character, Hong Keum-bo. She is a 35-year-old elite inspector at the Financial Supervisory Service, known for her tough reputation as the “Witch of Yeouido”. To investigate hidden funds at Hanmin Investment & Securities, she uses her youthful looks to assume the identity of a 20-year-old high school graduate named Hong Jang-mi. In her undercover role, she must handle entry-level tasks while secretly searching for evidence, all while hiding her true skills and intelligence.
“Using her naturally youthful appearance, she goes undercover as a 20-year-old junior employee at Hanmin Investment & Securities where suspicious funds have been detected.” โ Series Synopsis
Her mission gets personal when the company’s new CEO turns out to be her former lover. Ko Kyung-pyo plays Shin Jung-woo, a cold and calculated corporate raider known as a “corporate hunter”. He believes only numbers are honest and will use any method to reach his goals. When he meets the new intern Hong Jang-mi, he is struck by her resemblance to the woman he once loved, creating immediate tension and confusion.
Living with Keum-bo in the company dormitory is Ha Yoon-kyung as Go Bok-hee, a secretary at Hanmin Securities with a resilient spirit and a complicated past. She dreams of escaping to the United States and navigates the corporate world with a mix of opportunism and hidden hopes. Cho Han-gyeol rounds out the main cast as Albert Oh, the manager of the Risk Management Division. Despite his high-ranking position, he is a reluctant executive with a background in film studies and a fondness for conspiracy theories.
Supporting Characters and Family Dynamics
The story expands through a network of colleagues, family, and corporate figures who each influence Keum-bo’s undercover life. Their interactions build the show’s world of office politics and hidden agendas.
Choi Ji-soo portrays Kang No-ra, a key supporting character. She is the second-generation heir of Hanmin Investment & Securities but lives under a hidden identity to meet the conditions of her inheritance. She becomes one of Keum-bo’s roommates in the Seoul City Dormitory for Single Female Workers, Room 301. Another roommate is Kang Chae-young as Kim Mi-sook, a kind and diligent customer service representative from the Magang branch of the company.
The founding family of Hanmin Securities adds layers of power struggle and mystery. Lee Deok-hwa plays the formidable founder, Kang Pil-beom, a self-made billionaire who sees his business empire as his true legacy. Choi Won-young has a special appearance as his son, Kang Myeong-hwi, the former CEO whose suspicious fatal car accident triggers the main investigation. Byun Jung-soo appears as Choi In-ja, No-ra’s mother and Pil-beom’s second ex-wife, a former Miss Korea and actress focused on her daughter’s inheritance.
Keum-bo’s own family provides both support and challenge for her double life. Shin Yu-na plays her younger sister, Hong Jang-mi, the real 20-year-old whose identity Keum-bo borrows. A fan of 90s hip-hop, she lends her name and makeup skills to help her sister’s disguise. Lee Soo-mi and Kim Young-woong play Keum-bo’s parents, Kim Soon-jung and Hong Chun-seop, who together run a chicken restaurant called Ullala Chicken.
The Corporate World of Hanmin Investment & Securities
Inside the securities firm, various managers and specialists create a competitive environment. These characters represent the corporate culture Keum-bo must infiltrate and understand.
The Risk Management Division, where Albert Oh is manager, includes trouble-shooters and experts. Kim Do-hyun plays Bang Jin-mok, a veteran employee and former successful fund manager who now handles the company’s most sensitive internal issues. Jang Do-ha is Lee Yong-gi, a highly skilled engineer in the division who provides technical expertise for the team’s operations.
Other key company personnel drive the office dynamics. Seo Hyun-chul plays So Kyung-dong, the General Manager of the Trading Division who acts as a bridge between the founding family and the company’s operations. Im Chul-soo is Cha Jung-il, the General Manager of the Research Division, a master of corporate politics driven by personal advancement. Kim Hyung-mook appears as Oh Deok-gyu, an Executive Director and son-in-law of the founder, who seeks to consolidate power after Myeong-hwi’s death. Park Mi-hyun plays Song Ju-ran, the Chief of Staff and a decades-long confidante to the chairman with significant influence.
From the Financial Supervisory Service, Kim Won-hae plays Yun Jae-beom, the Director who plans Keum-bo’s undercover mission and acts as her handler. Han Soo-ho is Nam Dong-gi, a Team Leader and Keum-bo’s rival who becomes an internal threat by leaking information. Jung Yi-rang plays Kim Nam-ju, the advisor of the single workers’ dormitory.
The series also features several special appearances in the early episodes. Notable guests include Park Jung-pyo as a prosecutor, and Kwon Hyuk, Hwang In Jun, and Jung Hyun Woo in other roles.
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Undercover Miss Hong Release and Streaming Details
Undercover Miss Hong premiered on January 17, 2026, on the tvN network in South Korea. New episodes air every Saturday and Sunday at 9:10 PM KST. The series is scheduled to run for 16 episodes, with the final episode expected on March 8, 2026.
For international audiences, the drama is available for streaming on TVING in South Korea and globally on Netflix. The show is classified as PG13 and falls under the comedy genre, with elements of workplace drama and crime.
The series was written by Moon Hyun-kyung and directed by Park Seon-ho. It took over the Saturday-Sunday 9:20 PM time slot on tvN previously held by “Pro Bono”. An early working title for the project was “Miss Undercover Boss”.
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