Ghostbusters 2020

Ghostbusters 2 is a cancelled sequel to 2016's Ghostbusters that was originally slated shortly after the first film was released in theaters, but it was cancelled due to the film’s poor performance at the box office and the controversy surrounding the film.

Cast
Rest unknown
 * Melissa McCarthy as Dr. Abigail "Abby" Yates
 * Kristen Wiig as Dr. Erin Gilbert
 * Kate McKinnon as Dr. Jillian "Holtz" Holtzmann
 * Leslie Jones as Patricia "Patty" Tolan
 * Chris Hemsworth as Kevin Beckman

Plot
Unknown

Why It Was Cancelled

 * 1) Plans for a Ghostbusters shared universe, as well as the sequel were cancelled due to the controversy and box office failure (mentioned earlier) of Ghostbusters (2016).
 * 2) The first film got tons of hate from critics and audiences.
 * 3) Marketing for the first film was poor and the film failed to meet the expectations of being a hit.

Result

 * The sequel was permanently cancelled. Despite the cancellation, Paul Feig still expresses interest in doing the sequel.