Chad and Jenny Kido overhear Alexxa Brava, the host of The Vortex, and Jasper, the leader of the Grim Knights, making out, realizing that Alexxa is rigging the competition. Moose goes home and finds Camille on their patio, where she reveals that she wasn't actually upset at him, but was jealous when she saw his dancing and realized that she hasn't committed herself to it, despite being a talented dancer they later make up. Sean realizes that he has been selfish and made a lot of mistakes he apologizes to the MOB and later makes up with Andie and the LMNTRIX. Sean finds Andie outside, where she confronts him about his actions, saying she was not ready to perform the trick. The LMNTRIX, however, still win the battle and the Mob leave, angry at Sean. The LMNTRIX battle the Mob in a Vortex exhibition match during the battle, Sean tries to force Andie to perform a trick they tried during one of their practices but Andie refuses and leaves. She runs off, prompting Moose to leave the crew and return to Los Angeles to make up with her. Moose is kissed by another girl while freestyle dancing at the bar, which his girlfriend Camille Gage witnesses. While the rest of the crew are at a bar, Sean and Andie reveal they have broken up with their respective partners. Upon arriving, Sean finds out that both the Grim Knights and the Mob are also in the competition, motivating the LMNTRIX to practice extra hard. The group soon makes an audition video as the LMNTRIX and are accepted into the competition a few weeks later. Sean and Moose recruit Andie West and later Vladd, Violet, Hair, Chad, Monster, the Santiago Twins, Jenny Kido and Gauge to the crew.

Moose gets Sean a job working as a janitor in a dance center owned by Moose's grandparents, where Sean takes up residence in a janitor's closet. Sean decides to stay and while there, he notices a dance competition called The Vortex taking place with the prize being a three-year Las Vegas booking, inspiring him to put together a new crew with help from Moose. The Grim Knights win the battle and the Mob decides to pack up and leave Los Angeles and return to Miami, mostly because of financial difficulties, but also thinking there is nothing left for them and that they are not prepared for Los Angeles. After being refused at another audition, the Mob visit a club where they are noticed and challenged to a dance battle by another crew, the Grim Knights. Sean Asa and his flashmob crew, The Mob, have relocated from Miami, Florida to Los Angeles, where they are now trying to make a living from dancing, but are turned down at every audition.

All the step up movies in order