Lisa takes Sandoval and Schwartz on a business trip to Las Vegas to design their new bar, but when the guys focus more on partying than professionalism, Lisa questions the whole partnership. Meanwhile in Vegas, Brittany tells Katie and Ariana she needs to take a pregnancy test, and everyone is shocked by Jax's reaction to the results. Back in L.A., Lala reaches out to former frenemy, Stassi, to help plan her debut musical event, and Stassi urges Lala to confront the wildcard that could sabotage her performance, James Kennedy.