Orphaned at an early age, Esmeralda Fine devoted her life to her younger brother. Suddenly, the young man runs away from his home, and soon Esmeralda learns that he has been killed. To find the killer and take revenge on him, the girl decides to take a risky journey. She finds the criminal - the famous bandit Billy Darling, who has a reward on his head - she even shoots him, but... then events develop in the most unpredictable way.