SBS "Three Days" Kim Do Jin (Choi Won Young) had planted a spy that was Moon Sun Min (played by Kim Jung Hak).

On the episode of SBS Wednesday/Thursday drama "Three Days" broadcast on April 24th, Kim Do Jin was arrested as the suspect of the presidential assassination.

The prosecution captures that the phone number of the security bureau of the Blue House from Kim Do Jin's call log and realized that there was a spy in the Blue House.

Han Tae Kyung who watched the CCTV realized that someone had been absent during the meeting and pointed to the communciations director as a suspect. However, the communciations director said that the person that was not present was not him.

As a result of the investigation, the person who left during the meeting was none of ther than CP leader Moon Jung Min. Afterwards, Moon Jung Min used a EMP bomb to freeze communication and Kim Do Jin who escaped the prison tried again to heighten the tension as he tried to assassinate the president.