This is a 100% pre-produced drama. Filming began on 2016-Oct-17 and finished on 2017-March-06. It’s was specially aired on jTBC for the broadcast channel’s 5th year anniversary.
A longtime celebrity Yeo Woon Kwang (Park Sung Woong) suddenly has a need for a bodyguard and hires Kim Sul Woo (Park Hae Jin), a man trained in special investigations. He’s described as a mysterious man of many talents, and the drama is about the twisty events they encounter and the budding bromance between the star and bodyguard.