In the episode, a multimillion-dollar engagement ring is stolen from a hotel vault, and Shawn Spencer (James Roday) and Burton "Gus" Guster (Dulé Hill) investigate, without the permission of the police department. They visit the hotel, where Shawn gets keys to every room. Shawn becomes involved with the ceremony, and finds out everything that has been happening leading up to the wedding. While investigating, they discover the dead body of a suspect. During the ceremony, Shawn realizes what happened, and interrupts to solve it.