In a world where humans and anthropomorphic animals live side by side, BoJack Horseman, the washed-up star of the 1987 sitcom Horsin' Around, plans his big return to celebrity relevance with a tell-all autobiography that he dictates to his ghostwriter and former love interest Diane Nguyen. BoJack also has to contend with the demands of his agent and on-again-off-again girlfriend Princess Carolyn, the misguided antics his freeloading roommate Todd Chavez, and his frenemy Mr. Peanutbutter, who is also Nguyen's boyfriend, and later, husband.