I'm not sure specifically as I haven't read this particular fanfic. But generally, it might involve the UNSC (United Nations Space Command) in the Halo universe using the Halo installations in a strategic way to bring an end to a war. Maybe they find a way to activate or control the Halo rings without causing the total destruction they are known for.
Since I haven't read the fanfic, it's hard to say for sure. But likely, there would be UNSC soldiers or commanders. Maybe the Master Chief could be one of the main characters as he is a very important figure in the Halo universe and often involved in major events related to the UNSC.
In Halo fanfiction, ancient human ships can be a symbol of hope. If humanity is in a difficult situation, the discovery of an ancient ship with advanced technology could be the key to turning things around. It could also be a way to connect modern - day humans with their ancestors. Through the exploration of these ships, they can understand more about their heritage and perhaps gain new insights into their own capabilities.
Ancient human ships in Halo fanfiction can be a great source of adventure. They could be hidden away on forgotten planets or locked in some sort of stasis. Characters in the fanfiction might discover these ships and have to figure out how to operate them. Maybe they hold the key to unlocking some long - lost knowledge or power. It's also possible that these ships were involved in battles against the Forerunners in the distant past, and their discovery could reignite old rivalries or create new alliances.
One idea could be to have Spartans from the UNSC interact with Halo's Forerunner technology in unexpected ways. Maybe they find a Forerunner device that gives them new abilities or reveals secrets about the Halo rings.
Master Chief is often a main character. Since he's such an iconic figure in the Halo universe, in fanfiction about the UNSC becoming powerful, he usually plays a crucial role in leading the way. He might be the one to first test out new powerful weapons or technologies.
Well, in some 'halo unsc becomes powerful fanfiction', there might be a plotline where the UNSC teams up with an alien race that they previously thought was an enemy. This alliance could be the key to their newfound power. They could share technology and knowledge, which leads to the UNSC becoming a more formidable force in the galaxy. Maybe they learn how to build ships with faster - than - light travel that are also more durable and better armed.
First, do your research on both Halo and UNSC lore. Know the different characters, technologies, and settings. Then, come up with a unique concept for the crossover, like what I mentioned before. After that, start with a strong opening that grabs the reader's attention, perhaps with an action - packed scene or a mysterious discovery.
In fanfic, it could be explored through different character perspectives. Some characters might be in favor of it as a last - ditch effort to end the war, while others would be vehemently against it due to the moral implications. Writers might also explore the technical aspects of firing the Halos, like how the UNSC manages to gain control over them and what kind of safeguards they bypass or ignore.
If the Halo UNSC fires the Halos to end the war in fanfic, it's a very complex situation. First of all, the Halos' power is immense. They would cause widespread destruction across the galaxy. But from the UNSC's perspective, they might think that by doing this, they can end the war quickly. However, there are so many unknowns. For example, how would the other races react if they knew the UNSC was about to fire the Halos? And what kind of new power dynamics would emerge after the Halos are fired? It could potentially create a power vacuum or even new conflicts in the long run.