Dr. Venture is a bit behind on his shopping, but he's excited about hosting his annual Christmas Eve shindig. Brock turns out to have some sentimental Yuletide traditions. Dean and Hank, who still believe in Santa Claus, accidentally unlock a magical demon who threatens to ruin Dr. Venture's annual Christmas party and murder all his guests. Dr. Billy Quizboy and Mr. White hit on Triana, Dr. Orpheus' underage daughter. Meanwhile, The Monarch plans the ultimate gift for Dr. Girlfriend--the destruction of the entire Venture Compound. (thetvdb.com)