Jerry pursues a deal to buy the horse that Renzo lost to Mulligan while also talking to Escalante about training it. Meanwhile, Walter mulls a change in jockeys after Gettin' Up Morning's first race ends badly; and Ace gives a young whiz kid the opportunity of a lifetime.

Ace reacts decisively to a new wrinkle in the racetrack deal, but it's probably not a move that Smythe will take lying down. Meanwhile, Walter tries to concentrate on the historic Western Derby, in which his horse will go head-to-head with Gus'; Rosie's good news isn't so great for Leon; and Jo is injured in a stable accident.