In flashbacks to BoJack's old show Horsin' Around, he neglects the emotions of his young costar Sarah Lynn and instills in her the toxic 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, and after BoJack realizes he is the one taking advantage of her, he tries to get her help, but she leaves.