It is a normal day like any other. Clay Riddel was just made a comic book deal with a company and life has just started to look up. All of a sudden, people start going crazy. It starts off slow, but later has been renamed to "The Pulse." By listening to your cell phone, a message is transmitted into your brain and turns you into a zombie that does whatever you're told by transmission through radio. Every zombie is able to receive this signal when they are converted. Clay remembers about his son in Maine and tries desperately to connect with him, remembering that he had a cell phone as well. Clay meets a few others on his journey that haven't been transformed. The "Raggedy Man" toys with clay and forces him into what he wants him to do. The Raggedy Man is the spokesperson for the zombies, and they follow his every thought exactly as ordered.
What is Steven King trying to say by writing a book about cell phones and the technology to control people through them?