Maybe the plot involves Thanos controlling Loki to infiltrate the Avengers. Loki, with his skills in trickery, could be a great asset for Thanos in this regard. He could cause chaos within the Avengers' ranks, creating distrust and confusion, all while Thanos is planning his next big move in the background.
In this fanfiction, it could be that Thanos controls Loki to gather information about the Infinity Stones. Loki, having knowledge of different realms and their secrets, is forced to use his connections and intelligence to find out where the remaining Stones are. This would put Loki in a difficult position as he might be betraying those he once considered allies.
Well, one possible plot could be that Thanos uses his mind - controlling powers on Loki to make him steal powerful artifacts for his collection. Loki, being under Thanos' control, has to go against his own nature at times. For example, he might have to target Asgardian relics that he would otherwise protect.
In this fanfic, Thanos could be using Loki as a pawn in a much larger scheme. Loki, who is now controlled, might be used to start a war between different realms. However, Loki's own cunning nature and his relationships, like his complex relationship with Thor, could come into play. Thor might notice that something is off with Loki and try to break Thanos' control over him. This could lead to a series of events where Loki slowly regains his free will and turns against Thanos in the end.
Loki and Thanos are the central figures. However, characters from Loki's family such as Thor could also be significant. Thor might notice the changes in Loki and try to rescue him from Thanos' control. Additionally, characters like Heimdall, who has the ability to see across the realms, could be involved in detecting Loki's unusual behavior and Thanos' influence.
Well, perhaps in this fanfiction, Loki is cursed to be attached to Thanos' legs for a period of time. This forces them to work together in a very strange way. Loki tries to use his wits to find a way to break the curse, while Thanos is frustrated by Loki's constant attempts at trickery. Along the way, they might encounter other characters from the Marvel universe who are both amused and confused by their situation.
One possible plot could be that Thanos sees Loki as a tool that has failed him. So, he subjects Loki to various forms of physical and mental abuse to break his spirit. Loki, being a survivor, tries to find ways to outwit Thanos even in his weakened state.
In fanfiction, Loki's time with Thanos could involve Loki trying to outwit Thanos. Maybe he's forced to do Thanos' bidding at first but secretly plans to undermine him. He could be gathering information about Thanos' plans and weaknesses.
Well, it could be something like Thanos becomes intrigued by Loki's legs for some strange, otherworldly reason. Maybe Loki has some sort of magic or power that is centered around his legs that Thanos wants to possess or control.
Another scenario could be that Loki forms an unexpected alliance while in captivity. He could meet some other captives who have a grudge against Thanos. Together, they could plot against Thanos from the inside. Loki's silver tongue might be able to convince these captives to trust him and follow his lead. They could create a distraction or a mutiny within Thanos' forces, which would give Loki an opportunity to either escape or turn the tables on Thanos.
Loki would likely lose his usual sense of self - determination. He's normally a character who has his own plans and motives, but under Thanos' control, he would be more like a puppet. His actions would be dictated by Thanos rather than his own desires.
Another possibility is that Loki teams up with other characters. He could form an alliance with the Avengers or some other powerful beings in the universe. Together, they could come up with a plan to stop Thanos. Loki could contribute his unique skills, like his ability to shapeshift and infiltrate Thanos' ranks, and then they could launch a coordinated attack.
Tony might try to help Loki break free from the control. This could lead to a new alliance between them, which would be quite different from their usual relationship. They could then team up against the force that is controlling Loki.