Here's Boomer
Overview
A young boy whose father was a jockey wants to be one so he spends a lot of time at the farm where his father worked. But the trainer who has something against his father makes things difficult for him. When the owner gets a new horse and it seems that he and the current jockey is the only one who can ride him. When the jockey gets injured, he's asked to fill in but the trainer tries to sabotage him.