Grant Jardell's new foster brother is hiding a dangerous secret. So dangerous, it conceals a component that is central to a plot aimed at assassinating an evangelist during a national crusade event. The plot, devised by an evil cult, involves the use of a mothballed CIA project that is missing a vital piece, the location of which is hidden within the mind of the autistic foster boy. With the cult and the FBI chasing after the child, it is up to Grant and his teenage friends to follow a series of clues that will not only challenge their deductive and reasoning skills, but Grant's own spiritual faith in the process. They soon learn that not only was the life of the evangelist at risk, but the thousands of souls in the congregation as well. It is up to the teenagers to avoid apprehension and find the mystery component before it falls into the wrong hands, turning what was designed to be a joyous occasion into a complete nightmare.