One night when Sunset Shimmer is out holiday shopping, she ends up involved in a terrible accident. The next morning, Anon-a-Miss posts another embarrassing secret. The Rainbooms prepare to confront Sunset Shimmer about it when Principal Celestia calls an emergency assembly. Once they hear what happened to Sunset, all suspicion about her vanishes and they resolve to find the real culprit behind Anon-a-Miss to give Sunset Shimmer a Merry Christmas.