It's Stassi's 25th birthday and the whole gang is headed to Cabo to celebrate. Stassi is determined to have everyone get along so that nothing ruins this trip, but as usual, things don't go as planned.

Stassi and Scheana are not on good terms, but since Scheana has already paid for the trip her and Shay go anyway. The girls immediately exclude her, forcing Scheana to hang out with the girls, which just gives them more ammunition to treat her as if she doesn't belong

Schwartz and Katie get into a huge fight and Schwartz dumps a drink on Katie's head. This sets the tone for the rest of the trip and Stassi accuses Katie of being selfish for letting the incident upset her, which in turn has ruined Stassi's birthday dinner.

The drama doesn't end there though! We have part 2 next week and Jax is going to find himself very deep in the dog house