Joan Crawford and Bette Davis go up against ageism, sexism, and each other as they both sign up to work on the same project.

Bette and Joan form a tentative alliance as production on the film gets underway, but forces beyond their control choose to conspire against them.

The relationship between Bette and her daughter is under strain when Bette bonds with a new cast member; an intimate detail about Joan's past is revealed.

Bette and Joan prepare for the worst when the film is plagued by bad word of mouth on the eve of its release, and Oscar nominations are announced.

Bette is on her way to breaking records with a third Best Actress Oscar award, so Joan and Hedda launch a campaign against her.

Warner pressures Aldrich into reuniting the original team for another horror movie; a ghost from Joan's past poses a new threat.