Well, a 'dark desire story' could also be related to revenge. There could be a character who has been wronged in the past and develops a dark desire to get back at those who hurt them. This might involve elaborate plans and a journey into the darker side of their own psyche, as they struggle between their moral compass and the urge for vengeance.
The 'dark desire story' might involve themes of envy and greed. Imagine a story where a person has a dark desire for wealth. They start to scheme and manipulate others to get rich, not caring about the harm they cause. It could show how such desires can corrupt a person's soul and relationships.
A 'dark desire story' could be about a character who has a hidden longing for power that leads them down a dangerous path. For example, in a fictional tale, a young wizard might have a dark desire to control all magic, which causes him to make deals with dark forces.