17-year-old Yu Gwan-sun participates in the Korean independence movement. The country is under the rule of Japan, which annexed the country in 1910. Yu Gwan-Sun is arrested and sent to Seodaemun Prison. There, she is tortured, but she does not yield her will to her oppressors.
The film stars Ko Ah-sung in the central role of Yu Gwan-sun as well as Kim Sae-byuk and Jeong Ha-dam is supporting roles. It releases in South Korea on February 27th, 2019.