In this fanfiction scenario, Jamie could be kidnapped by a group of nightmare creatures who have broken away from Pitch's control. They might believe that Jamie holds the key to a new world order where nightmares rule. The Guardians would have to work together more closely than ever. North would use his workshop and his knowledge of the world to strategize. Bunny could use his tunnels to get to places quickly, and Sandy would send out his dream sand to try and communicate with Jamie in his sleep, all while trying to figure out how to defeat these rogue nightmare creatures and rescue Jamie.
It could also be a new character that is introduced in the fanfiction. Maybe a young girl who has her own set of powers related to light. She discovers Jamie's kidnapping and decides to help. She uses her light powers to dispel the darkness around the place where Jamie is held, blinding the kidnappers and allowing her to free Jamie and lead him to safety, and later on, she might even become an ally to the Guardians.
An OC who has the ability to see the past and future of the world related to the magic of the Guardians. This OC starts having visions of a great disaster that will befall the Guardians and the world if they don't change their ways. So, the OC tries to convince each Guardian to make changes, which leads to a lot of self - discovery for the Guardians and a new bond with the OC.
One possible plot could be that Jack Frost is corrupted by a dark force. He starts to spread winter not as a fun, playful season but as a harsh, unforgiving one. He might turn against the other Guardians, believing they are holding him back from his true power.
One possible plot could be that your original character (OC) is a new spirit of creativity. The Guardians initially don't trust this new spirit as they are cautious of any disruptions to the balance they maintain. But as time goes on, they realize that the OC's unique power of creativity is exactly what is needed to combat a new threat that is draining the world of its color and imagination. Through a series of adventures, the OC earns the respect and friendship of the Guardians.
A plot might involve a magical artifact that links the two universes of The Loud House and Rise of the Guardians. The Loud kids and the Guardians both become aware of it. They must work together to protect it from falling into the wrong hands. The older Loud sisters could use their creativity and resourcefulness, like Lori's ability to organize and Leni's fashion - inspired creativity, to help the Guardians in their quest.
The plot mainly focuses on a group of Guardians. They are characters like Santa Claus, the Tooth Fairy, etc. They come together to protect the hopes, beliefs and dreams of children from the threat of Pitch Black. It's a story full of magic and adventure.
The main plot involves a group of guardians like Santa Claus, the Easter Bunny, etc. coming together to protect the hopes, beliefs and dreams of children from the threat of Pitch Black, who wants to spread fear and darkness. They have to use their unique powers and work as a team to face this danger.
You could write a fanfiction where Tooth Fairy has to go on a solo mission to a far - off land to retrieve a special tooth that has the power to restore the health of all the fairies in her realm. Along the way, she discovers new things about herself and her powers.
In a fanfiction plot, Jamie could be kidnapped by a deranged fan of one of his cases. This person idolizes the criminals he's caught and wants to make Jamie pay. The Reagan family races against time to find him before the kidnapper's twisted plan is carried out. Meanwhile, Jamie tries to use his wits and training to escape or at least hold out until rescue comes.
Perhaps an escaped convict who has a grudge against the Reagan family in general and sees Jamie as an easy target. This convict might be looking to use Jamie as a bargaining chip to get out of the country or something similar.