Keith tells the story of the filmmaker who found a dead body behind the rubbish bins at his flat in Glasgow. During the film we watch as the filmmaker tries to find out the name of the dead person. The journey takes place on their mobile phone as they use different apps and methods of communication to undercover who the dead person was. Different animation techniques help bring the story to life as photographs, social media, dating apps and blogs are explored to put together a picture of the dead person. Distractions are common as the filmmaker struggles to concentrate and communicate. The pressure of the situation is conveyed through stop-motion animation, where trash, objects and nature come to life to offer help and interruptions. The filmmaker explores his neurodiversity and autistic traits, as different forms of communication come to the fore. As the film progresses the tension builds, and the name of the person finally reveals itself.