Birthday twins and perpetual rivals Stassi and Ariana plan extravagant parties on the same night, but while Ariana shines as the belle of the ball, an embarrassed Stassi runs off in tears. Meanwhile, Schwartz and Sandoval celebrate the approval of TomTom's permits by writing hefty checks, Lisa punishes Jax for ruining her big night, and Sandoval and Ariana work through their intimacy issues.