In a small suburban town, a rebellious teenager named Jim finds himself at odds with both his strict school administration and his overbearing parents. Sent to the Psychological Research Institute for behavioral assessment, he becomes suspicious of the institute's true intentions. The institute is fronted by the charismatic and seemingly benevolent Dr. Blake, who hosts a popular TV show promoting mental health and self-improvement. Unbeknownst to the public, Dr. Blake is secretly using the institute’s operations to conduct nefarious brainwashing experiments controlled by an alien entity—a grotesque, sentient brain. Jim discovers that the institute uses subliminal messaging in Dr. Blake's broadcasts to manipulate viewers' minds.

As strange occurrences mount and more townspeople begin exhibiting odd behaviors, Jim teams up with his girlfriend Janet to uncover the truth. They face numerous challenges, ranging from skepticism by authorities to direct threats from Dr. Blake’s enforcers. The pair gathers evidence that ties the institute’s activities to a series of inexplicable events, leading them to believe that an insidious force is at work. With time running out, Jim must decide whether to confront the danger head-on or find another way to thwart the institute’s plot, all while trying to maintain his own sanity amid the psychological assault.