Complete story — includes the ending
In flashbacks to BoJack's old show Horsin' Around, he neglects the emotions of his young costar Sarah Lynn and instills in her the message to never stop performing. In the present day, Sarah Lynn is a floundering pop star that BoJack takes in after her boyfriend Andrew Garfield breaks up with her, and she begins to manipulate him through his guilt and desire for a family, allowing her to do whatever she wants. While living with him, she informs him that Horsin' Around creator Herb Kazzaz has terminal cancer. The two end up having sex, but BoJack ultimately realizes he is the one taking advantage of her; he tries to get her help, but she leaves before he can right his wrong. Upon Sarah Lynn's departure he rationalizes that because everyone is a product of their own environment there's no consequences for one's actions.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, BoJack Horseman season 1. HTML formatting and reference markers removed. · Content license