An aging jockey (Clifton Collins Jr.), hopes to win one last title for his longtime trainer (Molly Parker), who has acquired what appears to be a championship horse.  But the years – and injuries – have taken a toll on his body, throwing into question his ability to continue his lifelong passion.  And the arrival of a young rookie rider (Moises Arias), who claims to be his son, and whom he takes under his wing, further complicates the path to fulfilling his dream.