There lives a woman in Galicia who is very beautiful and lovely so she has many wooers, including the Knight of Castille who is old and wealthy but at the same time, a brutal man.
She rejects his offer to be his wife and rather says yes to another man who is not so rich but he is younger with good reputation.
One day, when Maria opens the lady's closet, she finds the dead body of the old Knight in very bad condition.
The Knight offered her money to secrete him in the closet and it could happen, that he ate the poisoned cake which was there to kill the rats.
However, the lady is so deeply hurt and she says she could never survive such a shame and she dies from grief.