The outlaws stop what they believe to be a tax inspector called Flaxton. It seems he's on his way to count the mountain of tax silver currently housed in the castle.
Robin devises a plan to steal the money and give it back to the villagers. Meanwhile, a nun claiming to be the victim of Robin Hood collapses at the castle. She demands use of the chapel.
Sick of being told what to do by the men in her life, Marian requests the nun's help by allowing her into the nunnery. Gisborne's hugely disappointed but Marian's determined.
As Flaxton as their cover, the gang gain entry to the castle. However, it's a trap and they are locked in the vault. Flaxton isn't a tax inspector and the Sheriff has moved the money to the chapel.
The gang manage to escape. Meanwhile, it becomes clear that the nun's an impostor working with Flaxton. While the Sheriff and his men are distracted, she steals all the money.
The outlaws hijack Flaxton and the nun and distribute the money to the starving villagers.