While The Chipmunks are in London, they perform at an orphanage. Alvin tells a girl named Crystal that he knows the Queen and will take her to visit. In order to get keep his promise and get into Buckingham Palace, they dress as diplomats. The guard discovers the deception and chases them, in the process losing Crystal. The boys set out checking all 600 rooms to find her. Meanwhile, Dave finds out the boys are in Buckingham Palace and rushes over to stop them from causing an international crisis. After they get a new disguise, they are forced to entertain the Queen's guests. The boys happen to see the Queen with Crystal as they are being escorted out. The Queen is happy to see them and wished them to perform for everyone in the palace.
- "Rock This Town" originally performed the Stray Cats.
- The Chipmunks wear the same suits they wore in the Valentine's special at their concert.