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 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.
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.