National Security Agency (NSS) For the stage, it tells the story of important members of the National Security Administration working and fighting with criminal organizations.Kim Hyun-joon in the story ( Lee Byung-hun ) With Chen Siyu ( Zheng Junhao ) Same genus NSS The confidential member, the two fell in love with their boss Choi Shengxi at the same time ( Kim Tae Hee ornaments ). One day, Hyun-jun and Si-woo were