Stassi struggles to make amends with Beau after her birthday meltdown, while a newly sober James attempts to rekindle his friendship with Lala. Kristen celebrates the relaunch of her t-shirt line, Jax causes trouble at a SUR staff meeting, and the Toms present their cocktails to Lisa in hopes of getting them on the TomTom menu. Finally, when Katie, Kristen, and Stassi's mothers all come to town, the girls learn growing older doesn't always mean growing up.