In a flashback to the 80s, we see a 17-year-old Lily who gets kicked out of boarding school and runs away to L.A., she there sees her parents, Rick and Cece, and her sister, Carol. Back in present day, Blair and Nate go to a prom together, but the night doesn’t turn out as planned and Chuck has a something to do with it. Serena and Lily don’t see eye-to-eye over Serena’s recent run-in with the law. And we see No Doubt perform as an 80′s band named “Snowed Out”