The story of Robin Hood has made a strong impression on Jesse James, and he would like to become a bandit with a heart of gold, like his hero. With the help of his brother Frank and of his cousin Cole Younger, he decides to steal from the rich and give to the poor. But soon the trio is keeping the stolen money and spreading terror everywhere they go. At Nothing Gulch, Lucky Luke is more than ready for them. But will he be able to rid the town of these desperados when the population, terrorised, does nothing to help him?