In 1946 in Choseon (Korea), the stunning and intelligent Dr. Maria Arden arrives as the U.S. Army's medical advisor. However, she is a foreigner in a country plagued by war and deception. It is there that Dr. Arden encounters the enigmatic Dr. Kyeongju Lee, an enticing woman ostracized by society. Their harmless teasing soon turns into a fervent, taboo romance, while an illicit opium trade jeopardizes the fragile state of Choseon's society. Despite being drawn to one another as outsiders, their entire relationship was founded on deceit.