A man on a bike pedals for his life, being chased by armed assailants. He reaches his apartment building, drops his bike and runs inside. He pulls a digital camcorder from his backpack and is able to email out its contents before the men break in and asphyxiate him. This man, it turns out, is Leonard "Diddle" Callahan, and a college friend of Gus'. Shawn and Gus attend Doddle's funeral, where the minister says Diddle died from a hit and run accident on his bike. There, Shawn discovers, that not only was Gus in a singing group, but he has been estranged from Diddle, Tony and Joon for years and refuses to say why. Shawn also notices a mourner with a scar on his face who seems out of place there. Tony and Joon are able to speak to Shawn alone. They tell him Diddle was way too careful on his bike to die in an accident. They believe he was murdered, and they hire Shawn to find out what happened.

Juliet and Lassiter meet Gus at a vehicle storage yard in the middle of the night. Gus received a message from Shawn telling him that he'd solved the case and to meet him there but Shawn has not shown up and Gus is worried. He should be. Shawn is currently bound and stuffed into the trunk of a moving car. Shawn remembers a lesson Henry taught him as a child, and kicks out the rear light of the vehicle. Through the hole in the trunk, he's able to spot some landmark, and manages to text Gus cryptic descriptions of what he sees. Back at the storage yard, Gus is puzzled by the message. Lassiter finds blood on the ground and they realize Shawn's been shot and kidnapped. Gus calls Henry, who arrives at the scene and insists on helping find his son. So Lassiter and Henry team up to decipher Shawn's text and track him down, while Gus and Juliet retrace the steps of Shawn's latest investigation.