Top-notch choreography gets lost amid half-baked political posturing and self-indulgent sentimentality in first-time director Scott Speer's dance sequel. The hackneyed plot of this fourth installment in the franchise -- which began with 2006's "Step Up" -- focuses on a Miami urbanite (Ryan Guzman) who, together with his best friend since childhood (Misha Gabriel), leads a dancing flash mob that's on its way to fame and fortune. After he falls for an equally fleet-of-foot hoofer (Kathryn McCormick), they join the whole troupe in protesting her millionaire father's (Peter Gallagher) plans to redevelop local land and raze their downscale neighborhood in the process. Risque routines -- as well as a few turns of phrase too salty for the youngsters who would otherwise probably enjoy this outing the most -- dampen the fun still further.

Watch out for: Much highly suggestive dancing, a single censored rough term, occasional crude and crass utterances.

Rated: The Catholic News Service classification is A-III -- adults. The Motion Picture Association of America rating is PG-13 -- parents strongly cautioned. Some material may be inappropriate for children under 13.