Two years have passed since the Ghostbusters defeated Vigo and once again saved New York City and the world. Thanksgiving is fast approaching and Ray and Egon make a decision to hire a Fifth Ghostbuster to test their equipment. This new recruit 'Rookie', Bryan Welsh, is an eager and very giddy recruit, ready and willing to assist his heroes. However, Bryan's first day on the job gets a bit more complicated as a ghostly cosmic wave awakens the supernatural once again. The Ghostbusters must suit up and save the world ONCE AGAIN.
