Steve Freeling lives with his wife, Diane, and their three children, Dana, Robbie, and Carol Anne, in Southern California where he sells houses for the company that built the neighborhood. It starts with just a few odd occurrences, such as broken dishes and furniture moving around by itself. However, when he realizes that something truly evil haunts his home, Steve calls in a team of parapsychologists led by Dr. Lesh to help before it's too late.
Five years after they defeated Gozer, the Ghostbusters are out of business. When Dana begins to have ghost problems again, the boys come out of retirement to aid her and hopefully save New York City from a new paranormal threat.
When a single mom and her two kids arrive in a small town, they begin to discover their connection to the original Ghostbusters and the secret legacy their grandfather left behind.