Kim Je-Ha (Ji Chang-Wook), aka K2, is a former solider for hired by Choi Yoo-Jin (Song Yoon-A), the wife of a presidential candidate (Cho Seong-Ha) and the daughter from a chaebol family. Meanwhile, Ko An-Na (Yoona) is the secret daughter of the presidential hopeful. She is also a recluse.
Overview of the movie
The K2 Key
