The title of this horror apparently translates to "Air-conditioning-duct Ghost." Good times! Unfortunately, the American release is simply called "The Sisters." How appropriately dull.
So what we have here is a young rock band (though you never get to hear their music) who are on their way home and stop at a hotel to stay overnight. One of the band members notices a piece of fabric hanging from the, uh, air-conditioning-duct in the ceiling, and this leads to the discovery of a horrible curse by the ghost of the dead prozzy that has taken up residence in the AC. The kids find out that death is imminent, so they seek help from a Buddhist monk, who tells them if they sleep in coffins, they'll be fine. What? Did something get lost in translation there?
This movie isn't as terrible as some of these plot points make it sound. It does borrow (rather heavily) from popular Asian horror films like "Ju On" and "A Tale of Two Sisters," but it is much simpler than either of those movies. While the use of the "scary woman" and "creepy child" ghosts are a direct ripoff, they are given more screen time here and are more effectively creepy. Also, there is more violence and blood in this one than the recent influx of Asian supernatural stories. "Pee Chong Air" is like your typical Asian ghost story on speed. Another aspect worth mentioning is the fantastic use of color, especially in the eerie hotel room, that is clearly influenced by Ji-woon Kim's recent films. "Pee Chong Air" has much going for it, and I'd be willing to forgive the fact that the movie is about an AC-Ghost, or that pretending to be dead is one the suggested cures for a curse. Unfortunately, the conclusion of the film makes absolutely no sense whatsoever and seemed tacked on because the filmmakers had no idea how to end it.