After an armed man breaks into her house, Paris moves into her sister's place. Paris' boyfriend, Cy, sees text messages from Paris' ex that threaten to end their relationship.

Paris and the girls take Lexie for her first wild weekend in Vegas. A heated fight between Allison and Lexie leaves the girls divided.

Paris and Cy go to Cabo for a romantic New Year's Eve and end up in an explosive fight. Brooke leaves rehab for Aspen where she is haunted by a notorious dispute with Charlie.

A trip to Spain sends the tabloids into a frenzy over a few unflattering photos. Pregnancy rumors cause Paris to question her entire future.

Paris and the girls go undercover when they suspect Lexie is still writing porn. Jen is heartbroken over a romance gone wrong but ends up reconnecting with an ex-girlfriend.

Paris sets Brooke up on another blind date but things go terribly wrong when Brooke breaks her sobriety and spends the night with Charlie.

As Paris plans for her bi-coastal 30th birthday bash, she tries to patch things up with Brooke and contemplates marriage with Cy.