A new girl, Emily Kmetko, comes to train with they veterans at the gym and finds that they are both impressed and threatened by her.

The exit of Coach Marty and one of "The Rock's" top guns, Lauren, causes chaos at the gym. Prompting Payson, Kaylie and Emily (with Becca in tow) to head for Denver with a plan to confront them about their defection. All of this happens at the same time as the Cruz's (Ronnie and Alex) invite everyone to the mansion for a meeting. Meanwhile, Lauren is less than pleased at the cool greeting she receives at the new gym. And shocked by the discovery that she makes concerning her father and his 'Personal Assistant', Summer.

Tensions are still high at The Rock as the girls continue on without direction and with the surprise return of Lauren, Steve and a possible new heavyweight coach. Before the new coach's strict workout regimen takes effect, Emily, Payson and Kaylie decide to hit up a high school party to blow off some steam. Once at the party, Emily has an uncomfortable run-in with Razor, Kaylie has a fight with Carter after he realizes she lied to him, and Payson can't believe she's wasting her time at such a trivial event. Bringing more stress than fun to their lives, it's not exactly how the girls envisioned their evening.

Meanwhile, Lauren's birthday takes a wrong turn when Summer shows up at her birthday dinner.

The Rock is gearing up for Nationals, and with that comes more pressure, while Emily has to deal with the consequences of her actions.

With everyone gearing up for Nationals, the pressure is on at The Rock. To celebrate, the Cruz family is hosting the Nationals send-off party where, it turns out, everyone has his/her own agenda. Still dealing with her back pain, Payson decides to take a fellow gymnast up on his offer for some anti-inflammatory medicine behind her Mom's back. Summer plays a new card in her relationship with Lauren to see if she could finally turn things around. Lauren, on the other hand, has decided to make her final move to break up Carter and Kaylie for good, with explosive results. But with all the drama going down at the party, what should be a fun event turns out to be something very different.

When Carter comes clean about his infidelity Kaylie takes off the night before leaving for Nationals, and the girls must track her down before it's too late.

The National Gymnastics Championship in Boston has arrived and now everything the girls of the Rock have been working for is at stake. Can Emily pull it together on the biggest stage of her life? Can Lauren put aside her anger towards...everyone and pull off a gold medal winning meet. Can Payson get past the back pain and finally beat Kelly Parker on the National stage? Find out in the Mid-Season finale.

Kaylie faces the challenges of being a national champion; Payson tries to come to terms with her injury.

Kaylie and Nicky pose for a spread in the Seventeen magazine. They're billed as the golden couple, but there's definitely tension on set.

Payson's life is about to get a bit harder when she has to become a regular high school student after being home schooled all her life. With the chaos at school, Payson feels more like a loser than ever and she becomes the new target for the school queen bee. Things get even worse when Kaylie, Emily and Lauren show up to see her. But when she meets a fellow loner Ike, things start getting better. Is Payson going to survive High School?

Meanwhile, Sasha tries to make the annual Open House a fun activity. When he pairs Kaylie and Nicky for a special performance, the fun is over for the two of them.

Austin throws a party at his lake house and invites the girls, but Kaylie doesn't want them go because she wants them to focus on their training. Sasha and Summer go on their first date while trying to keep their relationship under wraps.

Kaylie, Lauren, and Emily have their final National Team practice before World Team tryouts, and Ellen Beals seems to have it out for Emily before the practice even starts!

An ultimatum backfires on Chloe, and Emily struggles to help out her brother, Brian.

After a rough National Team practice, the girls must deal with the outcome. Thrown by the truth behind Emily's scholarship, both the Tanners and the Kmetkos must deal with the outcome of two very angry girls and two adults who are no longer sure they can trust each other. And when information surfaces about Lauren's relationship with Carter, could that secret be the nail in the coffin for Chloe and Steve? And with the true identity of the Kipman Group out there, will Emily be willing to swallow her pride and accept the money to keep her dream alive?

Lauren's mother returns to Boulder to forge a relationship; Damon takes Emily on a date.

World Team tryouts have finally arrived, and The Rock girls have to fight for spots on the team.