《咖啡》改编自金卓焕小说《俄罗斯咖啡》,讲述了1896年朝鲜国王高宗逃到俄国使馆躲避日本人的“俄馆播迁”事件发生后,企图暗杀高宗的间谍刺客间不为人知的故事。Depicts the assassination attempt of King Gojong - the 26th king of the Joseon Dynasty. Set towards the end of the 19th century, when coffee was first introduced to Korea, Russian sharpshooter Ilyich and Joseon's first barista Tanya are manipulated by Japanese officer Sadako into an elaborate plan to assassinate King Gojong. Tanya and Ilyich are lovers who work together in Russian swindling gold and coffee from their unsuspecting victims. The duo are captured by Russian soldiers and eventually handed over to Japanese officer Sadoko. Sadako then recruits Ilyich and Tanya into operation "Gabi". The goal is to assassinate Korea's Emperor Gojong. The penalty for their failure is death. Meanwhile, King Gojong hides out on the premises of a Russian legation after his wife is killed by Japanese assassins. King Gojong works on staging the future Korean Empire.