This gentle, tuneful western is one of cowboy crooner Roy Rogers' best and most successful films; it is also his personal favorite. The fanciful tale tells how Rogers obtained his magnificent horse Trigger and begins with horse trader Rogers as he prepares to breed his best mare with his best friend's glorious Palomino stallion. Trouble comes in the form of a villainous gambler who has similar plans for his own mare. He attempts to rustle the stud, but the attempt fails, the stallion escapes and breeds with Roger's mare. Angrily, the gambler shows up and shoots the beautiful horse, leaving Rogers to shoulder the blame. Fortunately, Roy and his impregnated mare flee. Later she gives birth to Trigger who helps Rogers get revenge after he grows up.