In many fanfictions where Gil gets kidnapped, it could be for various reasons. Maybe it's by a rival group who wants to use him as a bargaining chip against his friends. For example, in some stories, Uma's crew might be targeted because they are seen as a threat in the Isle of the Lost. Gil, being a part of that crew, gets kidnapped. Writers often use this plot device to create drama and show the loyalty and courage of the other characters as they try to rescue him.
In most Harry and Gil descendants fanfiction, Harry and Gil are the central figures. Harry, with his signature hook and wild hair, often leads the way in their adventures. Gil, on the other hand, is always there by his side, providing support with his strength and good - natured personality. There may also be other characters from the Descendants universe that interact with them, like Mal, Evie, and Jay, but Harry and Gil are the main focus.
One possible fanfiction could be that Gil is exploring an old, abandoned part of the Isle and accidentally trips over some debris and hurts his leg. His friends, like Uma and Harry, then have to figure out how to get him back to safety and treat his injury.
Well, perhaps Gil is out fishing on the edge of the Isle and a sudden storm hits. A large wave knocks him off his feet and he hits his head on a rock. This could lead to a story about his friends trying to nurse him back to health while also dealing with their own fears about his condition.
One idea could be that Harry and Gil go on a treasure hunt that was hinted at in Descendants 2 but never fully explored. They could encounter new magical creatures and face challenges together, strengthening their bond as friends.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, including Descendants. Just use the search bar and type in 'descendants 2 Gil and Harry' to find relevant stories.
One great fanfiction could be about Gil and Harry's adventures outside of the Isle of the Lost. Maybe they stumble upon a magical artifact that leads them on a journey to discover more about their families' pasts. It could be filled with their unique banter and the challenges they face together.
One great fanfiction could be 'The Adventures of Harry and Gil'. It might focus on their new quests in the Descendants' world, perhaps facing a new villain. Another could be 'Harry and Gil: Bonds of Friendship' which delves deeper into their relationship and how they support each other through different challenges in Auradon.
One plot idea could be that Harry and Gil go on a secret adventure outside of the Isle of the Lost. They discover a hidden treasure map and have to work together to solve the riddles and find the treasure. Along the way, they face various challenges like avoiding capture by Auradon guards who mistake them for troublemakers.
One idea could be that Harry and Gil get into some sort of misadventure in Auradon. Maybe they accidentally stumble upon a hidden part of the school and have to figure out how to get out while also not getting in trouble. Another idea is that they meet a new character who challenges their friendship in some way, like trying to split them up because they think one is a bad influence on the other.