Step Up Revolution takes an ancient formula, and attempts to make it fresh by co-opting a legitimate pop culture phenomenon. It’s actually an interesting conceit: many of the dance sequences are the product of an underground group who organizes flash mobs. This gives screenwriter Jenny Mayer and director Scott Speer room to get a little artsy. There are times where a single bulb gives the dancers an ethereal presence, and others where they blatantly rip-off that damn Gotye video. But in between elaborate choreography, the plot oscillates between hackneyed and unintentionally offensive.