Shawn and Gus receive an invitation from Desperaux to visit him in British Columbia, but there's a catch: Desperaux is still in prison. But after much convincing, Gus agrees to go with Shawn on the free trip. Fresh off sharing a kiss with Juliet, Shawn is faced with telling her his feelings before she leaves for the Amalfi Coast with her boyfriend Declan, and before he and Gus leave for British Columbia.

Shawn and Gus receive a mysterious email asking them to come to a Cinnamon Festival in Dual Spires, a town so small it's written in parenthesis on the map. After meeting many of the colorful residents, including Robert and Michelle Barker who run the local diner and Sheriff Johnson, who questions how they heard about the Festival since they deliberately keep it simple in their town, they make their way to the square where the Festival is being held. But just after eighteen-year-old Randy is crowned Cinnamon King, Jack, a weeping teenager on a bike crashes the festivities and whispers upsetting news to the Sheriff. Robert and Michelle fear the worst has come true - their missing niece Paula has been found dead. Jack leads them all to the body, where Doc Gooden suspects she took her usual night swim and hit her head on a rock. Just then, Shawn receives another mysterious email suggesting it was murder.