William Blair Morton Ferguson

Billy Garrison, a jockey, is framed and suspended for throwing a face. Depressed, he goes to a bar and eventually gets into a fight. He loses his memory, and is taken to the home of pretty young Sue Desha, who gets him a job as a jockey for her father, Col. Desha. Unfortunately, the man who framed Billy, named Crimmins, finds out he's working for the Sue's father and reveals Billy's past to the colonel. Complications ensue.

Billy Garrison, a successful young jockey, rides the favorite "Sis" in the Louisville Derby. He does not ride with his customary vigor and dash. He feels "doped" and entirely out of condition and as a consequence "Sis," instead of winning the race, trails in last under the wire. At the stables he is accused of throwing the race, but denies it.

London has become enthralled by the antics of the contemporary Robin Hood, but when a band of bad guys start framing him for their misdeeds, the hero has to catch the criminals and clear his name.