From 65438 to 0896, the last king of North Korea, Gaozong, fled to the Russian Embassy for refuge because he could not bear the bullying of Japan and pro-Japanese factions, and enjoyed the beauty of coffee for the first time. In order to maximize their respective interests in North Korea, Russia and Japan used this preference of Emperor Gaozong to send spies to carry out assassination plans in the imperial court. The executors include ilych, the sharpshooter of Russian fraud gangs, Dagna, an expert in coffee making, and their behind-the-scenes pusher, Sadako, a pro-Japanese-Korean woman. Dania lurked beside Emperor Gaozong as a royal barista, and ilych went with him to protect her under the pseudonym of Japanese Sakamoto. In the story of walking on thin ice, love and danger go hand in hand.