It's Lucien's birthday. Lucien attempts to seal the deal with Annie. Cece tries to seduce Professor Chadwick. Scott acts out against Blaise and everyone else. Caroline's big party backfires.

Lucien's secrets are all over campus. Blaise visits Congressman Russell. Professor Chadwick is under investigation. And Caroline is determined to win Annie for Delta Phi as everything comes to a head in this season finale.