BoJack Horseman, a horse who starred in a hit 1990s family sitcom, drinks away his days in a Hollywood where people and talking animals live side by side. He hires a ghostwriter, Diane Nguyen, for the memoir meant to revive his career, while Princess Carolyn, his agent and ex-girlfriend, his freeloading roommate Todd and his old rival Mr. Peanutbutter circle around him.