Maybe there could be a fanfic where Lord Farquaad's ghost haunts Shrek. Shrek, at first, is annoyed but then realizes that Farquaad is trying to convey a message about an upcoming danger to the swamp and Fiona. So, Shrek has to figure out how to communicate with the ghost and stop the danger.
One idea could be that Lord Farquaad somehow returns from the dead but has lost his memory. Shrek, instead of seeing him as an enemy right away, decides to help him regain his memory. Along the way, they discover things about each other that they never knew before.
Lord Farquaad could be the more interesting one. He was a very self - centered and power - hungry character in the movie. A fanfic could explore his backstory more, like what made him so obsessed with power and beauty. Maybe there were some events in his childhood that led him to be this way. By focusing on him, you could give him a chance at redemption or make him an even more complex villain.
One idea could be a Shrek and Harry Potter crossover. Shrek could find himself in Hogwarts, causing chaos with his ogre ways among the wizards and witches. Maybe he'd mistake the Polyjuice Potion for some kind of ogre - enhancing drink.
One idea could be that Shrek and Shaggy meet in a magical forest that's a cross between Shrek's swamp area and the spooky woods where Shaggy often has his adventures. They could team up to find a special ingredient for a potion that would solve a problem in both of their worlds, like a drought in Shrek's land and a monster invasion in Shaggy's.
A plot could center around Lloyd and Lord Garmadon getting trapped in an alternate dimension. In this dimension, they have to rely on each other completely. Lloyd has to learn to trust his father's instincts more, and Garmadon has to learn to control his power in a new way. They could meet strange new creatures and face challenges that test their bond.
Perhaps in the fanfiction, the Gingerbread Man is on a quest to find a way to become a real, living being. Lord Farquaad hears of this and decides he can use the Gingerbread Man's desperation to his advantage. He offers to help the Gingerbread Man in exchange for servitude. But the Gingerbread Man is no fool and manages to turn the tables on Farquaad, teaching him a lesson about greed and power.
Maybe in the fanfiction, Shrek and Fiona are both actors in a play about their ogre selves. As they rehearse, they start to have real - life feelings for each other. They have to deal with the public's perception of their on - stage characters while exploring their new relationship. They might go through funny moments like when Shrek accidentally breaks a prop during a romantic scene, and Fiona can't help but laugh, which makes their bond even stronger.
Maybe in the fanfiction, the Fairy Godmother has a change of heart after seeing the love between Shrek and Fiona. She then decides to use her powers to protect their relationship from other threats, like an evil wizard who wants to break them apart. She would have to use her wits and magic in new ways to keep them safe. This could involve her creating magical barriers or disguises for Shrek and Fiona when they are in danger.
One idea could be a story where Shrek and Fiona take a trip to a far - off magical land they've never been to before. They encounter new and strange creatures and have to use their wits and each other's strengths to get out of various tricky situations.
One idea could be a story where a new student arrives at Hogwarts with an unknown and extremely powerful connection to magical creatures. This student discovers a hidden group of creatures that are being threatened by a dark force. The main character then uses their unique bond with the creatures to save them, much like Harry Potter often did with his friends against Voldemort.
A plot idea could be that there's a magical mix - up. Shrek and Yoongi swap appearances or abilities. Shrek has to deal with the K - pop world and Yoongi has to handle life in the fairy - tale land. It would be a comical journey as they both try to adapt to their new situations while also trying to find a way to reverse the magic. There could be lots of misunderstandings and funny moments along the way.