One idea could be that Evil Peter Pan tricks Wendy into leading her friends into a dangerous trap in Neverland. He might use his charm but with a malicious intent, like making Wendy believe they are going on an exciting adventure, but it's actually a setup for something bad.
One idea could be exploring Wendy's life back in London after her adventures in Neverland. Maybe she's having a hard time adjusting and misses Peter terribly. Another could be a story where Peter brings some of the Lost Boys to London for a visit and the chaos that ensues. A third idea might be a tale where Wendy's younger siblings grow up and start to doubt the existence of Peter Pan, but Wendy has to convince them he's real.
A possible plot is that Wendy gets lost in a previously unexplored part of Neverland. Peter Pan and the Lost Boys go on a frantic search for her. While lost, Wendy discovers a hidden tribe of magical creatures that are shy and have been avoiding contact with the Lost Boys. Wendy befriends them and they help her find her way back. This could lead to a new alliance between the Lost Boys and these creatures.
Well, you could write a fanfiction where Peter Pan and Wendy grow up but still remember their adventures in Neverland. They could try to recreate that sense of magic in the real world, perhaps by opening a place where children can experience a bit of Neverland. Or, what if a new villain emerged in Neverland and Peter and Wendy had to team up in a different way than before to defeat them? They might have to use Wendy's more grown - up thinking and Peter's knowledge of Neverland's secrets.
Well, you could write a fanfiction where Peter Pan loses his ability to fly and Wendy has to help him find a way to regain it. It could involve them going on a journey across Neverland, facing various challenges and meeting new characters along the way. They might have to seek the help of the mermaids or the Lost Boys. This would not only test their friendship but also show their growth as characters.
Well, a plot could be that Wendy gets lost in a different part of Neverland, a really dark and mysterious area. Peter pan has to go on a solo quest to find her. Along the way, he discovers some secrets about his own past and the origin of Neverland. Or, the Lost Boys could start to feel jealous of Wendy's relationship with Peter and try to cause trouble between them. This would create a lot of drama and conflict. Also, what if Wendy's siblings come back to Neverland in a different way, like they accidentally create a portal. That would be a whole new set of adventures.
Perhaps in the fanfiction, Tinker Bell gets jealous of Wendy not just because of Peter, but because Wendy starts to outshine her in magic. So, Tinker Bell teams up with Captain Hook in a plot to make Wendy look bad in front of Peter Pan, but in the end, they all realize the importance of friendship.
One interesting plot idea could be that Wendy discovers a modern-day Neverland hidden in the middle of a big city. It has all the magic of the original but with a modern twist, like the Lost Boys using skateboards instead of flying on clouds. Another idea is that Peter Pan has to adapt to modern technology in order to save Neverland from a new threat. For example, he might have to figure out how to use a computer to stop a digital virus that's corrupting the magic of the island.
Here's an interesting plot. In a modern - day setting, Wendy discovers that Peter Pan is real through some ancient family heirloom that has a connection to Neverland. She then finds a way to get to Neverland herself, but it has changed a lot since she was last there. Peter is also different, a bit more jaded. They have to work together to bring back the old magic of Neverland and along the way, they deal with feelings they had buried deep down for each other all those years ago.
One idea could be exploring Wendy's life after she returns from Neverland. Maybe she tries to bring some of the magic back to her own world. For example, she could start a club in her school about the stories of Neverland, but faces disbelief from others.
One idea could be that the kiss is a magical one that unlocks a hidden power within Wendy. For example, it might give her the ability to fly without the need for fairy dust. This could then lead to her having new adventures in Neverland, side by side with Peter Pan.