Shawn and Gus become wedding crashers at a posh ceremony in order to retrieve a stolen antique engagement ring inexplicably taken from an inpenetrable vault under surveillance.

The theft turns to murder when things start to come unraveled.

Shawn and Gus attend a Civil War reenactment rehearsal for the sheer pleasure of watching Lassiter have a nervous breakdown as he runs it.

When a scripted death turns real they end up donning uniforms themselves in order to find the murderer and perhaps prevent another.