Jessie Baird, the postmaster's daughter, handles the registered mail. Hankey, a gambler, seeing the men sending money away from the mining town, decides to rob the stagecoach of the mail bag. He orders Pete, a pal, to board the stage and throw the mail bag off at Deer Creek. Jessie becomes suspicious and starts for Deer Creek. Pete pushes the mail bag off the stage seat. Jessie takes a short cut and beats Hanky to the Creek. She finds the mail bag abstracts the money and puts rocks in its place. Tom Chester, owner of the stage, misses the mail bag. Going back to look for it, Tom is shot and wounded by Pete. Pete and Hankey accuse each other of treachery. Jessie, from her hiding place, gets the drop on both outlaws and brings them to justice.