Undercover Miss Hong

Undercover Miss Hong is an ongoing South Korean workplace comedy television series written by Moon Hyun-kyung, directed by Park Seon-ho, and starring Park Shin-hye in the title role, along with Ko Kyung-pyo, Ha Yoon-kyung, and Cho Han-gyeol. Set in 1997 Seoul, the series follows an elite securities inspector Hong Keum-bo, who goes undercover as a 20-year-old junior employee at a suspicious investment firm, navigating workplace chaos, hidden agendas, and comedic misadventures while investigating financial wrongdoing. It premiered on tvN on January 17, 2026, and airs every Saturday and Sunday at 21:10. It is also available for streaming on TVING and Netflix.

WWW Official Site

Synopsis

Hong Keum-bo is a 35-year-old elite inspector at the Financial Supervisory Service who knows nothing but work. 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. As Keum-bo navigates life as an inexperienced entry-level employee, she encounters comedic mishaps, unexpected friendships, and workplace drama, all while secretly investigating financial wrongdoing. Along the way, she must balance her dual identity, confront corporate intrigue, and navigate complicated relationships, including her interactions with the ambitious CEO Shin Jung-woo and her lively younger sister Hong Jang-mi.

Cast and characters

Main

Park Shin-hye as Hong Keum-bo
Ko Kyung-pyo as Shin Jung-woo
Ha Yoon-kyung as Go Bok-hee
Cho Han-gyeol as Albert Oh

Supporting

Seoul City Dormitory for Single Female Workers, Room 301

as Kang Nora
Kang Chae-young as Kim Mi-sook

Hanmin Investment & Securities Risk Management Division

as Bang Jin-mok
as Lee Yong-gi

Key Personnel of Hanmin Investment & Securities

Seo Hyun-chul as So Kyung-dong
Im Chul-soo as Cha Jung-il
as Oh Deok-gyu
as Song Ju-ran

The Founding Family of Hanmin Investment & Securities

Lee Deok-hwa as Kang Pil-beom
Byun Jung-soo as Choi In-ja

Financial Supervisory Service

Kim Won-hae as Yun Jae-beom
Han Soo-ho as Nam Dong-gi

Others

Lee Soo-mi as Kim Soon-jung
as Hong Chun-seop
as Kim Nam-ju

Special appearances

Choi Won-young as Kang Myeong-hwi
Shin Yu-na as Hong Jang-mi
Park Jung-pyo as a prosecutor

Production

Development

Undercover Miss Hong was developed under the working title Miss Undercover Boss. The series is directed by Park Seon-ho, who helmed Business Proposal and Brewing Love, written by Moon Hyun-kyung, who penned Memorials, planned and produced by Studio Dragon with Celltrion Entertainment.

Casting

In March 2025, Park Shin-hye was reportedly reached a tentative agreement to appear in the series. Two months later, Ko Kyung-pyo was reportedly cast as the male lead. In June 2025, both Ha Yoon-kyung and Cho Han-gyeol were reportedly cast alongside Park and Ko. In July 2025, Park, Ko, Ha, and Cho were confirmed to star. Additionally, Yuna was cast marking her acting debut.

Release

Undercover Miss Hong was reportedly scheduled to air in the first half of 2026. It premiered on tvN on January 17, 2026, and airs every Saturday and Sunday at 21:10. The series is also available for streaming on TVING in South Korea and on Netflix globally.

Viewership

Undercover Miss Hong premiered on January 17, 2026, recording a nationwide viewership rating of 3.5% and a metropolitan area rating of 3.2%, according to Nielsen Korea. The first episode reached a peak rating of 4.3% nationwide. On January 28, 2026, the series entered the Netflix Global Top 10 at number 6, appearing in the top 10 rankings of 14 countries.