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.

After busting them for going to the party, Sasha puts the girls through a rigorous day of training and team building.

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.

The girls raise the bar with their training in preparation for a competition against the Chinese team, but troubles at home and confidence issues plague them. Meanwhile, the moms hold a fund-raiser to cover the Chinese team's travel expenses.

In the season finale, everything is put on the line as the girls go up against the Chinese team to prove once and for all that they're the best.