We're headed to Cabo for Stassi's 25th birthday and we brush up on our Spanish to remember that "Sur" does in fact mean "south" in Spanish. But even though we travel sur of the border, the drama of our favorite Sexy Unique Restaurant follows. First, Scheana further distances herselves from the girls when she (gasp!) chooses to ride in the boys' van instead of with them. Next, a new fight brews between Katie and Tom Schwartz when he refuses to let her be mean to Scheana. And last but not least, Princess Stassi herself creates drama when she insists her friends treat her like the Birthday Queen she deserves to be.