Nellie Ferguson

Paul Craig is an aviator-inventor who becomes blind due to overwork. He stumbles into a room as a person is being killed by foreign agents - who decide to let Craig live because he cannot identify them. The murder is part of a plot to overthrow the monarchy of fictional Ruvania.

Joan (Helen Twelvetrees) is a Canadian, adopted by Ma Dawson (Nellie Ferguson), a struggling horse breeder and trainer. Joan thinks "legs don't make a race horse, it's blood", and so she buys an unwanted thoroughbred colt called Stormalong. Helped by Ma's son Tommy Dawson (Frank Leighton), Joan restores the horse to health and fitness, and soon enough the horse is winning race after race, becoming a favourite for the Melbourne Cup.