
Set in Gyeongseong during the Japanese colonial period, the drama follows Ga Gyeong, the city’s most talented pickpocket, who strikes a dangerous deal with the independence army and goes undercover at the Japanese Government-General of Joseon. Disguised as an employee, she is tasked with acting as a “fake spy” for just 100 days, but her mission slowly turns her into a real informant caught between survival, loyalty, and conviction. As she navigates her perilous double life, Ga Gyeong becomes entangled with Tae Ung, a Joseon-born Korean interpreter working inside the same building. Against a backdrop of secrets, lies, and growing political tension, a romance quietly takes shape between them.
Synopsis: MyDramaList
100 Days of Deception is a Korean drama from 2026, with 16 episodes. It mixes action, thriller and historical. It stars Kim You Jung and Park Jin Young and is directed by Yoo In Shik. Its story tags include Fake Identity, Japanese Colonial Rule and Espionage. If you enjoyed it, try Chief Detective 1958 or Undercover.
Click any theme tag to explore matching Korean dramas: