In 1973, BoJack writes into The Dick Cavett Show while Secretariat is being interviewed, asking what he does when he feels sad. Secretariat tells BoJack to always keep running forward. One month later, Secretariat dies by suicide after being banned from racing. Three months after the release of the book, BoJack wins a Golden Globe and convinces producer Lenny Turtletaub to finally greenlight the Secretariat biopic, with a woman named Kelsey Jannings directing and Andrew Garfield playing the lead. Diane is invited by eccentric billionaire Sebastian St. Clair to document his providing of aid to impoverished countries, which would require her to leave Los Angeles for three months. Todd and Mr. Peanutbutter come up with a series of outlandish business ideas, one of which hospitalizes Garfield and gets BoJack the role of Secretariat. BoJack talks to Diane on her roof for the first time since he approached her at the convention, and she reveals she has been hired to work on the biopic. They discuss the true nature of happiness before BoJack admits he just wanted Diane to like him, and she says that she knew. BoJack visits the observatory where Herb revealed that Horsin' Around was being picked up, where he signs an autograph for a horse fan.

Guest starring: John Krasinski as Secretariat