When the obliteration of all you hold dear roils ominously on the horizon, it's time to step up and fight. Fight for what you believe in and for what you think is right. It doesn't hurt if you mix in some amazingly crazy dance scenes along the way. Actually, it might make you an instant YouTube success and skyrocket you to Hollywood stardom, especially if you live in the world of "Step Up: Revolution" (PG-13 for sensuous dancing, skimpy attire, and some language).

Hitting theaters this weekend, the fourth installment in the popular "Step Up" dance movie franchise takes the idea of flash-dance mobs from mindless entertainment to social protest. The film takes place in Miami, where the weather is hot and the clothes few--a place where "The Mob" is beginning to make big news.

A group of flash dancers daylighting as waiters and DJ's, The Mob stages elaborate performances on the street, in art museums, and in hotel lounges, in hopes of winning a $100,000 YouTube contest. The masterminds behind the group are childhood friends Sean (Ryan Guzman) and Eddy (Misha Gabriel).

They do everything together until Sean stumbles on the love of his life at a beach club one evening after work. Emily (played by "So You Think You Can Dance" Season 6 contestant Kathryn McCormick) has plenty going for her. She's pretty, she can bust out some good dance moves, and on top of that, her dad owns the hotel where Sean works.

When Emily realizes her hunky man of the people leads The Mob, she's more than ready to join, hoping a little spontaneity will augment her audition efforts for a prestigious dance company. Sean agrees on the condition that Emily doesn't reveal her parentage to the rest of the crew.

Their relationship is put to the test when news breaks that Emily's dad plans to raze The Mob's historic neighborhood in preparation for a glittering luxury hotel development. The Mob responds with a masterfully choreographed dance scene involving dozens of dancers in business suits and fedoras as a protest at the city council meeting.

The video goes viral, putting The Mob in first place in the YouTube contest, bringing the development plans to a halt, and showing that positive, creative protests do make a difference. Victory isn't inevitable though, and The Mob must undergo trials before learning that creativity and ingenuity trump fear and destruction.

Despite the basic plot, the message of "Step Up: Revolution" is one we must all take to heart. When home, family, faith, or freedom are on the line, we must use passion, ingenuity, and creativity to stand up for the things we hold dear.