Han Tae Kyung, member of the secret service, is suspended for missing his mark, leaving the president vulnerable during a dangerous public outing. At the very same time, Tae Kyung's father dies due to complications from a suspicious car accident. Officer Yoon Bo Won comes to see Tae Kyung at the funeral, and as the two separately start to investigate what happens to his father, Tae Kyung learns of a possible threat to the president.