One possible plot could be the characters from 'Halo' and 'Forward Unto Dawn' getting stranded on a mysterious planet. They have to combine their skills and technology to survive. For example, the Spartans' combat abilities along with the strategic thinking of the 'Forward Unto Dawn' crew.
I'm not sure specifically which 'due unto others real story' you are referring to. It could be about treating others fairly and with respect, perhaps a story where someone learned the importance of giving others their due in a particular situation, like in a workplace where an employee finally got the recognition they deserved.
There could be a character who was once consumed by darkness but is now on a path to redemption through the power of starlight. This character could be a main focus as they struggle with their past actions and try to make amends. Another main character might be a seer or a wizard who can manipulate starlight and uses their powers to fight against the encroaching darkness. There could also be a love interest for one of the main characters, who either supports or challenges their journey in relation to darkness and starlight.
One interesting aspect could be its unique take on the theme of darkness. It might explore characters' struggles within a dark or shadowy world. For example, it could show how they overcome their inner demons or face external threats that are associated with the darkness.
Well, in 'unto darkness starlight fanfiction', there could be a storyline where a group of characters are lost in the darkness and they use the concept of starlight as a guiding force. It could involve them facing various obstacles and enemies in the dark, and the starlight could represent different things to different characters, like a symbol of home or a source of magic. They might have to fight their inner demons as well as external threats.