Extreme Ghostbusters - Season 1 Episode 1 Darkness at Noon (1)
Overview: Construction workers have inadvertantly released Achira, a ghost that can spread disease. The only ones who could stop this ghost are the Ghostbusters, but they have long since disbanded. In fact, only Egon is still in New York City. He is now teaching a college class, but his four students may prove very helpful against this nasty ghost.