While helping a young client get his Star Wars Collector Action Figure back from a wealthy man, Shawn finds the action figure and a dead body in the mansion. He puts on his psych act and tells the police there is a crime at the mansion.
Shawn, Gus, Lassiter, and Woody leave a boring party and create their own fun. They wake up in the Psych's office without a memory of the night. They find various clues which they do not understand, and learn there is a dead man involved.
Lassiter is approached by a beautiful woman who seems interested in him, and then she disappears. Shawn and Gus investigate a string of murders which appear to have been committed by a vampire. Lassy's new girlfriend seems mysterious.
While working a case, Shawn & Gus also plan a birthday party for Juliet. They find out her absentee father is in town, and hope to reconcile Juliet and her father as a gift. The father is a con man who has trouble toeing the line.
Shawn and Juliet go to a lover's retreat and meet an overly romantic couple. The couple are scam artists who recently high jacked a motorist. Shawn and Juliet end up working the case. Gus, Lassiter, and Henry spend a restless weekend in town.