Three university professors Peter Winkman (Bill Murray), Raymond Stanz (Dan Aykroyd) and Aegan Spengler (Harold Ramis) specialize in the study of ghosts and spirits. They decided to leave the campus laboratory and form a "ghost hunting team." They used the latest scientific instruments to deal with the countless big ghosts and ghosts that haunt New York City and achieved success. But government departments regard them as charlatans. It wasn't until one day that a group of evil demons surrounded the entire New York City and possessed the beauty of Dana (Sigourney Weaver) that everyone finally realized the seriousness of the situation. Can this "ghost-hunting brigade" save New York and make the devil have nowhere to hide? The film won the 57th Academy Awards in 1985 and was nominated for Best Visual Effects and Best Original Song. It is known as one of the most popular and funniest comedies in film history.