Independence Day 3

Independence Day 3  was a planned third film in the Independence Day series and wasn't known to have an official title. It was announced by Roland Emmerich shortly after Independence Day: Resurgence was released in theaters. It was planned to be shot back to back in the style of the Back to the Future series was shot.

Plot
Unknown

Why It Was Cancelled

 * Resurgence failed at the box office.
 * Sometime afterward Disney merged with 20th Century Fox.
 * Dean Devlin decided not to make a third film following the poor box office performance of Resurgence.

Result

 * The film was permanently cancelled.