BoJack develops feelings for Diane after returning from Boston, leading him to drunkenly steal the "D" from the Hollywood Sign as a grand romantic gesture. Knowing he needs to get rid of it, he enlists Mr. Peanutbutter for help, only for him to take all the credit for the theft himself. As BoJack leaves an honest, intimate voicemail for Diane, Mr. Peanutbutter privately proposes to her, only to make a big spectacle of it when she accepts. BoJack convinces Diane to delete the voicemail without listening to it when she calls him back. Todd is courted by the Aryan Brotherhood and Latin Kings in prison, only to get them to reconcile their differences and escape when a helicopter returning the "D" crashes into the prison wall.

Guest starring: Yvette Nicole Brown as Beyoncé, Chris Parnell as Aryans Gang Member, Horatio Sanz as Latin Kings Leader.