Alan York is a race horse jockey who sees his friend and chief rival jockey fall to his death during a steeplechase race. Alan knows it could not have been an accident. He pursues clues while meeting a lovely young lady and her fascinating uncle, until he finally discovers why his friend died... and why he is next to die.
As a surprise, two horse owners decide to ride their animals themselves in a steeplechase. But Bill Davidson's horse "Admiral" behaves weirdly, and falls hard after an obstacle. Bill dies from his injuries. His friend Alan York suspects the animal was doped by unscrupulous bookies and starts to investigate. He doesn't know how serious his opponents are, and that he's in danger to suffer the exact same fate as his friend.
After two friends have their houses looted of expensive paintings and vintage wine collections, Cleveland finds those responsible when he travels to Germany.