Full Disclosure- I am a Korean Cinemaphile. I have written for years that Korean films are as good, or better, than Hollywood movies currently being made. This is especially true in the action genre. This film is a perfect example. It is a gritty action film about a talented, but reluctant, woman with deadly skills who is forced to use them to avenge her friend, the Ballerina. The film uses the subject of sex slavery and involuntary pornogrpahy as its somber backdrop to generate the basis for the action in this one. Its stars are good, although somewhat animated. The action and fighting are good. The gun violence is better than the fight choreography. The relationship between the Ballerina and the star is nuanced and very sweet. It is the foundation upon which it the film is built. You can watch in English dubbed version, but I prefer in Korean with English subtitles.