Some of the other reviewers have criticized this movie for bad writing and a lack of plot, and even some of the positive reviews dismiss the plot. I don't want to get academic because this isn't Citizen Kane, but there is an interesting story and Corey Yuen handles it well, revealing it bit by bit through flashbacks.

The plot features two sisters (Shu Qi and Vicky Zhao) who are professional killers and a brilliant rookie detective (Karen Mok). The younger sister (Zhao) has a conflict with her older sister, who she thinks is holding her back. At the same time, she starts a cat and mouse game with the detective. Big sister is caught up between love and her career. The detective, in addition to her game with the little sister, is in conflict with her department superiors who want her to keep out of the way of the investigation. Meanwhile, both sisters and the cop are fighting the bad guy. And running along beneath all this is the complex relationship between the little sister and the female cop.

There's plenty of plot here and, as others have pointed out, some really good action and lots of eye candy. My only criticism is that Corey Yuen put so much emphasis on the eye candy part that it undercuts the credibility of Shu Qi as a tragic figure. It's hard to picture Shu Qi (especially when she flashes one of those soft-focus angelic smiles) as a tragic figure. But she did pull it off in "Portland Street Blues" so I know she can. Like I said, I think the emphasis on eye candy got in her way a little bit, but not enough to prevent me from thoroughly enjoying this well-crafted action/drama. Recommended.

Note: American release DVD has language options for English (dubbed, not the actresses), Mandarin, and Cantonese, and English or Chinese subtitles. No meaningful extras.