A really cool plot could be that there's a prophecy about Striker and Moxxie having to combine their powers to defeat a great evil in Hell. They initially doubt the prophecy but as the danger looms closer, they realize they have no choice but to trust in it and figure out how to work together despite their differences.
One possible interesting plot could be Striker and Moxxie being forced to work together on a dangerous mission. They start off hating each other but gradually come to respect one another's skills as they face various challenges.
One popular 'Moxxie x Striker' fanfic is 'The Unlikely Bond'. It delves into a scenario where they are forced to work together on a mission and gradually develop an understanding of each other.
The main characters are Striker and Moxxie. Striker might be seen as the more dominant and aggressive one. He has his own goals and ways of doing things in Hell. Moxxie, who is associated with I.M.P., has his own set of friends and a life that gets intertwined with Striker's in the fanfic, creating a lot of interesting interactions and storylines.
You can start by looking on popular fanfic websites like Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, and you're likely to find quite a few 'Moxxie x Striker' ones there.
Maybe a fanfic where the pilots of Gipsy Danger and Striker Eureka swap jaegers for a mission. This could lead to some really interesting character development as they have to adapt to the different machinery and learn about each other's usual roles in a more hands - on way. They could also discover new things about their own jaegers from this experience.
One interesting plot could be Goku and 17 teaming up against a new, powerful enemy that neither could defeat alone. They combine their skills and powers in unique ways.
One interesting plot could be Sasuke taking Boruto on a special training journey across different hidden villages. This would not only strengthen Boruto's skills but also give them a chance to bond like master and apprentice.
One interesting plot could be two Pikachus from different regions meeting and learning about each other's unique electric attacks. For example, one Pikachu might know a special move that the other has never seen before. They could then teach each other and become stronger together.
One interesting plot could be Tobe finally winning Pucca's heart through a series of self - improvement and heroic deeds. Maybe he starts to learn cooking from Pucca's family to show his dedication to her culture.
One possible interesting plot could be a unique alliance between Godzilla and Mothra against a new, more powerful enemy. Maybe this new foe has the ability to disrupt their natural powers and they have to find a way to combine their strengths in a different way than before.
A plot might involve Negan and Rick having to survive in a post - apocalyptic situation together, like being trapped in a desolate area with limited resources. They slowly start to understand each other better during this struggle. For example, Rick realizes that Negan has some survival instincts that are actually useful, and Negan sees Rick's leadership in a new light.