Childhood friends Sean and Eddy work as waiters at Miami Beach’s ultra-posh Dimont Hotel, owned by ruthless developer Bill Anderson. In their off-duty hours, they lead a renegade crew known only as “The Mob,” a group of cutting-edge dancers, musicians and artists that captures the collective imagination of the city with dazzling, high-tech, hit-and-run flash mobs that appear out of nowhere—and vanish in an instant. The Mob’s outlaw performances attract the attention of Anderson’s daughter Emily, a gifted dancer in her own right. Under pressure from her dad to leave her lifelong dream behind and get a “real” job, Emily has reluctantly agreed to go to work for him unless she earns a coveted spot in the prestigious Wynwood Dance Company. But after witnessing a flash mob, she is determined to join in. After Emily and Sean connect at a dance club, he introduces her to the group, leaving out the fact that she’s the boss’s daughter. Emily’s impressive dance skills win her a place in The Mob, but her presence drives a wedge between Sean and Eddy. When Anderson announces plans to raze The Mob’s neighborhood to build a huge commercial development, the group begins planning their most daring flash mob ever to try to save the waterfront, forcing Emily and Sean to choose between family ties and their love for each other.