A golden statuette is stolen from a Boston, Massachusetts, museum, and the Second Sight Psychic Detective Agency is called in to investigate. Wills, the uptight owner of the company, is concerned that his psychic, a guru named Bobby McGee, is having difficulties with his abilities, but Bobby’s handler, Preston Pickett, Ph.D., assures Wills he has Bobby under control. As police lieutenant Manoogian enters the museum, Bobby goes into a trance and channels Murray, a spirit with a Brooklyn accent. Murray declares the thief is in the room and spins Bobby around, finally pointing him at the museum curator. Valuable Roman busts fly into the air. One of them shatters on the floor while Bobby pulls the stolen statuette from the bust’s hollow pedestal. The next morning, Wills informs his partners that their reward, minus the art they destroyed, amounts to eleven dollars. Wills then asks Bobby for information on an attractive redhead, but Prescott declares that Bobby‘s talents are not to be misused. The next day, Catholic nun Sister Elizabeth and a young woman named Maria Soledad arrive at the office. Before they can talk, Bobby informs Wills that Elizabeth is Cardinal O’Hara’s secretary and that Maria was rear ended in a hit-and-run accident and cannot afford the repair bill. As there is only a $300-dollar reward, Wills tries to talk Maria out of hiring Bobby. Elizabeth also objects, believing that Bobby is a charlatan, but Maria insists and hires the psychic detectives. When Elizabeth leaves, Wills declares that she needs a man. Murray possesses Bobby, warning Wills to leave the nun alone. For emphasis, Murray throws an energy bolt that knocks Wills across the room. At the hospital, Wills asks Bobby if he detected anything weird about Elizabeth. Bobby intuits she was emotionally hurt by a man, and predicts that Wills is about to “open his heart.” When Bobby extols the power of love, Wills responds that he will only listen to the psychic’s romantic advice once Bobby loses his virginity. The three men meet Elizabeth and Maria at church where they are introduced to Cardinal O’Hara. Bobby throws the clergyman onto the floor and lies on top of him. Prescott declares that the psychic is sensing danger and is attempting to protect O’Hara. Wills orders Prescott to feed Bobby chocolate, which breaks his trance. The cardinal thanks Bobby for his concern, but insists God will protect him. Prescott runs tests, and informs Wills that Bobby is becoming unstable and may “burn out.” Wills suggests they have Bobby supply stock tips before that happens, but Prescott refuses to abuse Bobby’s gifts for money. That night, Bobby argues that Murray can help them find the men who ran into Maria’s car. The men pick up Sister Elizabeth. With Bobby on the hood of the car, they drive through Boston and end up on a deserted street. A Cadillac appears, sideswipes their car, and drives on. Frustrated, the detectives take Elizabeth to a Chinese restaurant, where Bobby reads their minds and orders for them in Mandarin Chinese. When Prescott explains that Bobby is helping Murray release his anger at his girl friend, who sent him out for ice cream, causing him to be killed by a truck, Elizabeth demands to be taken home. Wills volunteers to drive, prompting Murray to appear. The spirit reveals that Elizabeth was his girl friend. He levitates her over the table. As Wills attempts to pull her down, Murray covers them in melted ice cream. The next day, Elizabeth asks Bobby to channel Murray so she can apologize. However, she insists it was not her fault that he was hit by a truck. Elizabeth upsets Murray by telling him they can no longer see each other. Later, Bobby persuades Maria to drive him, Wills, Elizabeth, and Prescott around the church, to see if he can detect any psychic clues that will lead them to the hit-and-run driver. Bobby channels the driver, leaps out of the car yelling “Yo, baby,” and hits on Elizabeth. When Wills gets out of the car, Bobby leaps back in and drives away with Wills holding onto the hood. After weaving in and out of traffic, Bobby smashes into an abandoned seafood restaurant. They discover a gang of armed men. Bobby psychically forces them to put their hands in the air and knock their heads against a wall. Prescott orders Bobby to stop, and the gang runs away. The next day, Lt. Manoogian informs the detectives that Cardinal O’Hara and Maria have been kidnapped and asks for help in finding them. Although Prescott protests that Bobby is too erratic for such a huge case, Wills takes it on. Concerned with the company’s image in such a high profile case, Wills forces Bobby into a business suit. Prescott warns that Bobby cannot wear constraining clothes, but Wills ignores him. At the cathedral, Elizabeth introduces the detectives to Bishop O’Linn. When Bobby shakes the Bishop’s hand, he receives a tremendous shock. He strips off his clothes and runs down the aisle, screaming, “I’m alive.” Later, dressed in an altar boy’s outfit, Bobby is about to reveal the cardinal’s location when Manoogian and his boss, Police Chief Coolidge, burst into the room. Coolidge orders the detectives out, but Elizabeth informs him they were hired by the church. Bobby channels the thug that hit Maria’s car. Wills realizes the kidnappers were casing the church when they hit Maria’s car. He investigates O’Hara and learns the cardinal is in line for the papacy. He also discovers that O’Hara wants to demote Bishop O’Linn; however, if O’Hara disappeared, O’Linn would become the new cardinal. Later, Wills is driving when Bobby makes dolphin noises and grabs the wheel. Prescott explains Bobby is using “psychic sonar.” They come to halt at an office building where Bobby insists the kidnappers are holding the cardinal. Bright lights emanate from Bobby as he runs into the building. The building then disappears. Bobby returns to the car to say he had the wrong location and passes out. At the diner, Bobby receives a message from Murray that the kidnappers are moving their prisoners, and Bobby, Prescott, and Elizabeth must fly to Pittsburgh, Pennsylvania. On no account are they to contact Wills. As the plane taxis for takeoff, Bobby leaps up and yells that Wills is in danger. He is shrouded in a white light as he psychically takes control of the plane, drives it off the runway and into downtown Boston. Wills tracks the kidnappers to a seedy hotel and is about to enter when he receives a psychic message to duck for cover. The criminals burst out of the hotel shooting, barely missing Wills. A gunfight ensues until the plane arrives. Bobby jumps into the street and calmly avoids the bullets. When Prescott and Elizabeth join them, they all run into a nearby strip club where Bobby has a “psychic-sexual overload.” Two of the gang members appear. Elizabeth kicks one in the neck. Prescott smashes the other with his briefcase. Wills orders his colleagues to get the police. Elizabeth kisses him, and leaves muttering that she now has to go to confession. As police arrive to secure the stolen airplane, Wills enters the hotel, locates the cardinal and Maria, knocks out their guard, and unties them. As they are about to leave, two more kidnappers enter with Prescott and Bobby. When a thug fires at Wills, Bobby screams, and the bullet freezes in midair. Elizabeth leads a squad of police into the room and they apprehend the criminals. Later, Maria asks Bobby how she can repay him, and he asks her to sleep with him. Elizabeth and Wills shake hands and say goodbye. Weeks later, Wills joins Bobby, Maria, and Prescott at a park. Prescott suggests that Bobby find a girl for Wills, but Wills insists they should not misuse Bobby’s powers for personal gain. Prescott ignores him, and Bobby points to a woman in a summer dress. It is Elizabeth, who has left the convent. Murray briefly appears and claims he met another entity with a “hot” astral body. Through Bobby, he gives Elizabeth a deep kiss until Maria orders him to stop. The couples wander down to the seashore.