Garrison's Finish.

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.