One idea could be that Lucy discovers a hidden dragon slayer magic within herself and has to train with the other dragon slayers. Another could be a time - travel plot where Lucy and the dragon slayers go back in time to prevent a great dragon - related disaster. Or perhaps a story where Lucy is kidnapped by an enemy who wants to use her connection to the dragon slayers for evil purposes.
Well, a plot could involve Lucy finding a rare magical item that has a special connection to the dragon slayers. This item could enhance their powers but also put them in danger as others seek to steal it. Also, a story where the dragon slayers lose their powers and Lucy has to find a way to restore them, maybe by going on a quest to a mysterious and dangerous place. And there could be a love - triangle - type situation between Lucy and two of the dragon slayers, which adds drama to the fanfiction.
Well, it could be that a new magic is discovered that is a combination of celestial and dragon slayer magic. Lucy and the Dragon Slayers start to experiment with this new magic. However, it has some unforeseen side effects that put them in danger. They have to figure out how to control this new magic while also dealing with other threats that are attracted by the new power they seem to possess. Also, Lucy might accidentally get transported to a parallel dimension where the Dragon Slayers are very different. She has to find a way to get back home while also helping the alternate - version Dragon Slayers with a problem in their dimension.
One idea could be that the dragon slayers discover the dragons they are slaying are actually being controlled by an even greater evil. So they have to team up with some of the dragons to defeat this new threat.
One idea could be that the dragon slayers from different guilds team up for a super - difficult quest. Maybe they have to face an ancient dragon that is far more powerful than any they've fought before. This would lead to some really cool battles and interesting character interactions as they combine their unique skills.
One idea could be that Lucy discovers a new, rare form of dragon slaying magic. Maybe she finds a hidden dragon lair where this magic is stored and has to overcome various traps and challenges to obtain it.
Well, a possible plot could involve Lucy going on a journey to find the origin of ice dragon slaying magic. Along the way, she meets other dragon slayers who are skeptical of her because she's not a typical dragon slayer. But she proves herself by using her unique skills and knowledge related to ice dragons. She might also uncover a dark secret about the history of ice dragon slaying that changes her perspective on it all.
Maybe Lucy gets a special dragon slayer weapon that only she can wield. With this weapon, she teams up with Natsu and the others to fight a group of dragon-like creatures that are terrorizing the land. As she uses her new abilities, she also learns more about the history of dragon slayers.
One possibility could be that they start their journey by accidentally stumbling upon a hidden dragon lair. Inside, they find ancient scrolls that teach them the basics of dragon slaying. Lucy might use her celestial magic in unique ways, like summoning spirits with dragon - like abilities to aid her in combat. Levy, with her script magic, could decipher the secrets of dragon weaknesses written in long - forgotten languages on the scrolls.
The main characters include Lucy, a celestial wizard with a kind heart and strong will. Natsu Dragneel, the energetic fire dragon slayer who is always ready for a fight. Gray Fullbuster, who aside from being a dragon slayer - like figure, has his own ice - making magic and his on - and - off rivalry with Natsu. Wendy Marvell, the young and gentle sky - dragon slayer. And of course, their various friends and allies in the Fairy Tail guild, like Erza Scarlet, who also often gets involved in the stories involving Lucy and the dragon slayers.
One common theme is protection. The dragon slayers often see it as their duty to protect Lucy from various threats. For example, in many fanfictions, they will fight off powerful enemies who target Lucy.
One common theme is friendship. Since Lucy and the dragon slayers are all part of the Fairy Tail guild, their relationships are often explored in terms of friendship. Another theme is adventure. They usually go on various quests together, so there are a lot of adventure - based stories. And of course, there can be a bit of romance too, as the 'x' in 'lucy x dragon slayers' might suggest some potential romantic relationships between Lucy and the dragon slayers.