Your an average middle school-aged boy, nicknamed Mob. Although you look like an inconspicuous person, your in fact a powerful esper with immense psychic power. To keep from losing control of this power, you constantly lives a life under an emotional shackle. In order to help learn how to control your abilities, you work as an assistant to con-man Arataka Reigen, a self-proclaimed spirit medium. Though you want to live a normal life just like those around you, but a barrage of trouble keeps coming after you. With your suppressed emotions growing inside you little by little, your power threatens to break through its limits as you eventually encounters other espers like the Claws.