The title refers to Motel Mistress, the 'love motel' where the majority of the film is set, and there are knowing references to Psycho, with the motel clerk's peephole hidden behind a painting. The standout scene, though, is the journey to the motel (driving symbolically away from Bangkok's Democracy Monument): a middle-aged man picks up a teenage prostitute, and their awkward fumble is choreographed to Bizet's Carmen.
After more kinkiness at the motel, the revenge plot kicks in, as the young woman humiliates the man who exploited her. But this is the film's least effective sequence, as it's tacky (with slow-motion shots of wobbly dildos) and lacks any suspense.