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.

The girls compete in the semi-qualifications. Meanwhile, Kelly's mother tries to take down Kaylie; Payson gets overprotective about Lauren's health issues; and a new curfew halts Payson's burgeoning romance.

In the series finale, Payson boldly changes her floor routine, jeopardizing her spot on the team. Meanwhile, Kaylie's shocked by her drug-screening results; Lauren weighs her recovery against her Olympic dreams; and Jordan won't accept help from Kaylie.