The challenge is to make it more than just an infomercial. Seen that way, Blackpink: Light Up the Sky manages to offer a welcome reminder that even for K-pop's reigning queens, all that glitters isn't always gold.

The K-pop phenomenon may still feel new to some consumers (it's not), but if nothing else, Suh's film handily does away with the sense that these superstars are simply part of a pre-packaged cultural machine.

Here is an economy in which companies make millions by working kids to the bone. Skimming the topic is a missed opportunity, but the film's winsome stars are its saving grace.

Not exactly a shattering, thorough analysis of the group and the whole concept of K-pop, but there are enough comments here for the film to find appeal even among people who are not fans of the group, and that is where its main value lies.