Son Dae-won

An Emissary of No Return retells the story of a real historical event in 1907 known as the Hague Secret Emissary Affair. Korea had been colonized by Japan. In order to protest to the international community, the Korean emperor king Gojong sent three secret emissaries to the talks of the Hague Convention of 1907, to get the great powers to overturn the Japan–Korea Treaty of 1905.

The series follows Yu Rim, a Korean expatriate in the United Kingdom working as a journalist, who is ordered by the Democratic Peoples Republic of Korea to proceed to Seoul and gather intelligence on the United States Forces Korea.