Annie goes after a female outlaw to clear her own reputation when the outlaw poses as the famous marksman in her rampage through the territory.

When orphaned teen Bucky starts hanging out with local tough Mace, a concerned Annie warns his brother Steve. But Bucky defies Steve joining with Mace in a robbery, causing Annie and Lofty to head after them.

Clell Morgan is a former delinquent who is starting over with the help of the Junior Pioneer Club of Diablo. He begins to worry that all that may fall apart when he learns his older brother has escaped from jail and is headed to Diablo.

When a beautiful woman robs the bank, the young bank teller is accused and it's up to Annie to find evidence to prove he is innocent and that she is guilty, unbelievable as it seems.