Chicken Little 2: Mission To Mars

Chicken Little 2: Mission To Mars was a planned sequel to the 2005 animated Disney film, Chicken Little.

Plot
The story would involve Chicken Little in the middle of a love triangle between his childhood sweetheart, Abby Mallard, and a very attractive newcomer, a French sheep named Raffaela. Being at a great disadvantage, Abby would go to great lengths to give herself a makeover. [1]

Why It Was Cancelled

 * 1) The first film received mixed to negative reviews from critics and audiences, despite being a box office success, so Disney decided not to make the sequel, and John Lasseter banned all future sequels after his appointment to CCO of Disney in 2006.

Result

 * Chicken Little 2: Mission To Mars was permanently cancelled.
 * Some of the elements of the sequel were used in the game Chicken Little: Ace In Action, and the game serves as a sequel to the film.
 * Chicken Little is a stand-alone film.