The Queen’s Secret Service is a highly respected organization formed in the early of 1950s by one of South Korea’s finest Presidential family. It was formed to protect the country and its current President, with the members being both men and women, though they are often called as the organization’s spies.

There’s one tiny catch.

Nobody knows that it exists, unless if you’re recruited into the organization by the director himself.

Krystal is one of the organization’s finest spy, having been on the most lethal operations before and making it out alive. With that resting face syndrome, reserved personality and icy glare of hers, it wasn’t a wonder why she’s the top number one spy that the organization has. 

Kai had been stealing goods from the morning market one fine day like he usually would, only to be unwillingly caught by one of the Queen’s Secret Service’s council member, simply because Kai had attracted his attention. Because of his ability to easily disappear into the crowd and steal something without getting caught, now he’s stuck with an organization that he didn’t knew existed in the first place, --- The Queen’s Secret Service.