After the Japanese kidnap two Korean teenagers and take them to a comfort station to join other girls who are serving as sex slaves, only one of them survives. Decades later, the elderly woman tries to reunite with her friend's spirit.

In the era of corruption, Hak-gyu sings songs and tells stories on the street with his band. One day, Hak-gyu's wife Gan-nan is kidnapped by gangsters and his daughter Cheong loses her eyesight after the incident. He decides to travel in search of his missing wife and learns that corrupted noblemen are behind the mob.

"Spirits' Homecoming, Unfinished Story" is part dramatization and part documentary. The film contains scenes from the movie “Spirits’ Homecoming” and testimonials by comfort women who were enslaved by the Japanese Imperial Army during World War II.