Perhaps Lucy is a new character in the Twilight setting who is brought in to sing at a special event. Her singing stirs emotions in the main characters like Edward or Bella. It could lead to a series of events where she becomes involved in their world in unexpected ways, like getting caught up in the vampire - werewolf feud because of her influence through singing.
It could be that Lucy is an ordinary human who discovers she has a supernatural - influenced singing ability. In the Twilight universe, this could make her a target or a valuable asset. She might start singing with some of the characters, and through that, she uncovers secrets about the Twilight world and her own place in it. Her singing could also be a form of magic in the context of the fanfiction, with unforeseen consequences.
One possible plotline could be that Lucy has a hidden talent for singing, and in the Twilight world, she uses her singing to attract the attention of a certain vampire or werewolf. Maybe it creates a new kind of bond or rivalry among the supernatural beings.
I'm not entirely sure as I haven't read this specific fanfic. But generally, it might be about a character named Lucy and some events related to singing that occur in the Twilight universe. Maybe it's about a new vampire or human character who has a passion for singing and their interactions with Lucy within the Twilight - inspired setting.
I'm not sure of specific 'Singing with Lucy Twilight' fanfiction off the top of my head. You could try searching on fanfiction websites like Archive of Our Own. They usually have a wide variety of fan - created stories.
One possible plotline could be that the oc has a different set of skills or powers compared to Lucy, which changes the way the story unfolds. For example, if the oc is a magic user with a more aggressive style in a world where Lucy was more of a support - type magic user.
A possible plotline could be that Lucy Chen decides to keep her pregnancy a secret at first. She's worried about how it will affect her work and her standing in the department. As she progresses through the pregnancy, it becomes harder to hide, and she has to face the consequences.
One possible plotline is that Natsu starts writing in the diary about his confusion regarding his feelings for Lucy. He might write about how he gets jealous when other guys show interest in her. Another plot could be that Lucy accidentally discovers the diary and confronts Natsu about it, which then leads to them finally admitting their feelings for each other.
Perhaps the rogue is hired by an evil force to kidnap Lucy. She could be the daughter of an important figure or a person with unique abilities that the evil force wants to use against the good side. As the story progresses, Lucy could try to escape or even try to turn the rogue to her side by appealing to his better nature.
Well, it could be that Lucy has a misunderstanding. Maybe she overhears something that makes her think Natsu is planning to leave the guild without saying goodbye. So, in a fit of panic and anger, she kidnaps him to get an explanation. Then, as the story progresses, they have a heart - to - heart conversation where the misunderstanding is cleared up. It could also be a situation where Lucy is competing with someone else for Natsu's attention, and she thinks that by kidnapping him, she can have him all to herself for a while and figure out how to make him like her more.
One possible plotline could be that Lucy and Caspian are newly married and the pregnancy is a surprise. They then have to deal with the political implications in Narnia as well as their own personal fears and joys. Another could be that they face some sort of danger during the pregnancy, like an enemy threat that endangers Lucy and the unborn child.
A plotline might involve a werewolf character with blind faith in their pack's traditions. But when a new threat emerges that the traditional ways can't handle, they have to decide whether to stick with their blind faith or adapt. In the context of 'Twilight', there could also be a plot where a character has blind faith in the idea of a 'true love' that crosses the boundaries between species, like a vampire - human relationship, and they go to great lengths to pursue it, facing many obstacles along the way.
A plotline might involve Twilight Sparkle being transported to a Spartan - based realm. There, she has to prove herself in their combat trials. As she progresses, she discovers a conspiracy within the Spartan society that she has to expose using her intelligence and magic. Or perhaps she teams up with a group of Spartans to retrieve a powerful magical artifact that is of great importance to both her world and the Spartan world.