In this fanfiction, a possible plot point could be that Stiles has a special connection to an ancient power source. When the Avengers are in trouble, he uses this connection to access this power and enhance their abilities. Another aspect could be that he has to navigate the complex politics within the Avengers team. Some members might be skeptical of him at first, but as he proves his worth, they start to trust him and together they face the ultimate threat that only Stiles' unique perspective can help them overcome.
Well, perhaps the plot starts with Stiles being mysteriously drawn into the Avengers' universe. He then realizes that there is a great threat looming over the team. He might start by investigating the threat on his own, using his detective - like skills. As he gets closer to the truth, he teams up with the Avengers. Along the way, there could be some internal conflicts within the team that Stiles helps to resolve, all while working towards saving them from the impending doom.
One possible plot twist could be that the real danger was not what it seemed at first. For example, while the Avengers thought they were being attacked by a supervillain, it was actually a test set up by a greater power. And Peter discovers this truth while trying to save them. Another twist could be that Peter has to sacrifice one of his powers temporarily to save the Avengers, which changes his approach to being a superhero.
I haven't actually read this fanfiction, so I can't summarize it specifically. But generally, it might involve Stiles, a character probably from another universe like Teen Wolf, using his unique skills or knowledge to rescue the Avengers who are in some sort of danger. It could be a really exciting and creative crossover story.
The plot could twist when it turns out that the real danger the Avengers are in was set up by someone close to Peter. It could be a friend or a teacher who has been secretly working for a super - villain. Peter has to overcome the shock of this discovery and still find a way to save the Avengers.
It could be that a powerful sorcerer in the Avengers' world goes rogue and starts using dark magic. The Avengers don't know how to handle magic, so Harry is called in. He has to face this rogue sorcerer, using his own brand of light magic. Along the way, he might have some clashes with the Avengers' way of doing things, but in the end, they all work together and Harry manages to save the day by defeating the rogue sorcerer and restoring peace in the Avengers' world.
One possible scenario could be that Derek arrives just in time as Gerard is about to harm Stiles. Derek uses his werewolf strength and speed to fight Gerard off, perhaps with some cool combat moves. He then quickly gets Stiles to safety, like taking him back to the pack house.
The plot could involve Castiel being summoned by a magical accident in the Avengers' universe. He then realizes that there is a great evil approaching, something that not even the combined might of the Avengers can handle. So, he decides to use his knowledge of the supernatural and his powers to help them. He might have to teach the Avengers about the existence of angels and other celestial beings to make them understand the true nature of the threat. Along the way, there could be some really interesting interactions between Castiel and the different Avengers members. For example, his stoic and otherworldly nature could contrast with Tony Stark's sarcastic and scientific mind, leading to some great dialogue.
Well, Stiles is used to being in a small, tight - knit group in his own story. In the Avengers, he'd start as an outsider. But his loyalty and determination would win over the others. He could add a new dimension to their relationships, being the one who is constantly asking questions and making them re - evaluate their assumptions. For example, he might question the Avengers' black - and - white view of good and evil based on his experiences in his own world.
Well, one possibility could be that Stiles somehow gets transported to the Harry Potter universe. Maybe there's a spell gone wrong in the Teen Wolf world that sends him there. Harry, being the heroic type, senses that Stiles doesn't belong and is in danger. He could use his magic skills, like the Patronus charm, to protect Stiles from the various dark creatures in his world, like Dementors or Death Eaters that might be after Stiles for some reason. Then they'd team up to find a way to send Stiles back home.
One possible plot point could be Dudley finally realizing the true nature of the danger Harry is in and using his new - found courage to save him. Maybe he discovers some secret about Voldemort that helps him protect Harry. Another could be Dudley using his physical strength, which he was known for in the original series in a more heroic way to fend off Death Eaters.
One interesting crossover could be Stiles using his wits to outsmart Loki. Stiles is known for his intelligence in his own universe, and facing off against Loki's trickery would make for an exciting story. Maybe he could use his knowledge of the supernatural to help the Avengers deal with magical threats.