Maybe they could go on a journey to find an ancient weapon that was prophesied to be the only thing that can stop an upcoming apocalypse. Along the way, they face various challenges that test their friendship and loyalty to the slayer cause. For example, they might encounter a group of demons who try to trick them into using the weapon for evil purposes.
One idea could be Buffy and Faith having to team up to face a new type of vampire that is immune to their usual slaying methods. They'd have to rely on each other's unique skills and experiences to figure out a new way to defeat them.
One idea could be a magical competition. They compete to see who can master a new and dangerous spell first. Buffy might use her traditional training and moral compass, while Faith could be more reckless in her approach, which would create a lot of tension.
The main characters are Buffy and Faith. Buffy is a well - known slayer, strong - willed and determined. She has a lot of experience in fighting the forces of darkness.
One idea could be a story where Buffy and Faith have to go undercover at a high - society event where the latex dress is part of their disguise. They end up having to work together to take down a vampire who is preying on the rich guests.
One plot idea could be Buffy and Dean teaming up to fight a new, powerful supernatural threat that neither of their usual worlds has faced before. Maybe a demon that can cross between dimensions easily.
One interesting storyline could be their adventure in a parallel dimension. In this dimension, Buffy and Faith have to team up with Devon to fight against a new type of demon that is immune to their usual weapons. They have to search for ancient artifacts to defeat it.
In Buffy x Faith lemons fanfic, the contrast between their personalities can lead to really engaging stories. Buffy is often more by - the - book while Faith is more of a wild card. When you throw in the romantic or sexual tension (the 'lemons' part), it can create some really exciting plotlines that explore different aspects of their relationship, like trust, jealousy, and love. It also allows for different interpretations of the Buffyverse and how these two characters could interact in new and unexpected ways.
Perhaps there's a latex dress that is a key to opening a portal to another dimension. Buffy and Faith both want to control the dress to either keep the portal closed or use it for their own purposes. Their different approaches to this situation create an interesting dynamic in the fanfic.
One plot idea could be that Buffy Dawn's transformation into a demon is caused by a dark spell cast by an old enemy. As a demon, she has to struggle with new instincts while her friends try to find a way to reverse the transformation. Another could be that she turns into a demon to gain power to fight an even greater evil, but then has to deal with the consequences of that power.
One idea could be that the second chosen ones are a group of misfits from different planets. They discover they have latent Force abilities that are different from the traditional Jedi or Sith powers. For example, they can communicate with droids on a deeper level, influencing their programming in unique ways.
Love and friendship are common themes as well. Whether it's platonic love between the two of them, or how their relationships with others are affected by their bond. In some fanfics, they learn to truly care for each other through difficult situations, which shows the power of friendship.