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.

Based upon the famous novel by H.G.Wells. A poor scientist named Griffin discovers a way to make things invisible. Since he has no money to continue his research, he decides to perform his only experiment on himself. After becoming invisible, Griffin has a lot of trouble trying to conceal this from other people.