All-stars from the previous Step Up installments come together in glittering Las Vegas, battling for a victory that could define their dreams and their careers.
Sean brings his dance crew known as The Mob to Los Angeles to try and make it. But they havent had much luck, eventually the Mob decides its time to go back to Miami but Sean decides to stay. He learns of a dance competition is Las Vegas wherein the winner will get a three year contract. Sean needs a new crew so he asks fellow dancer Moose for help. And Moose introduces him to Andie, another friend and dancer who got injured a few years ago and is now ready to get back in. He recruits some other friends and they head Las Vegas as LMNTRIX. When they get there, they discover that the Mob too is also there, which is very touchy for Sean.
After months of failed auditions and no income, Seans demotivated Mob votes to disband and return to Miami. Only Sean remains, stubbornly loyal to the dream of success. He accepts a menial job with free lodging as handyman at Mob mate Mooses grandfather Boriss ballroom dance school. Hes impressed by their cool, classically schooled dance instructor Chad. Learning by Internet about a well-endowed national competition, Sean gets Moose, Chad and injury-recovered Andie, whom Moose introduced him too, to join his new LA crew and develop a new choreography. Arriving at the Las Vegas competition venue, they find among the competition as Florida candidate the remainder of Seans original Mob.