He might explore the spaceship out of curiosity. Naruto is always eager to learn new things, so he'd be all over the controls and strange gadgets inside. He could accidentally activate something that sends out a signal, attracting either help or danger.
The spaceship could be filled with some sort of power source that Naruto senses. Since he has a large amount of chakra, he might be drawn to it. As he investigates, he discovers that this power source can be harnessed in a way that could potentially change the balance of power in his own world. However, he also has to be careful as there could be negative consequences if misused.
Perhaps the spaceship is home to an alien race that has been stranded on Earth for a long time. Naruto's discovery of the ship awakens them. At first, they are hostile, but Naruto, with his kind heart and ability to make friends, tries to communicate and understand them. Eventually, they form an alliance, and Naruto uses their advanced knowledge to help his village and the ninja world as a whole.
Well, in many such fanfictions, Naruto might take the fox kit under his wing. He could start by trying to find out if the kit is injured or lost. Maybe he'd use his own experiences of being an outcast to empathize with the little fox. He might try to protect it from any harm in the village, as the villagers often misunderstand things related to foxes due to the Nine - Tailed Fox incident. And who knows, the fox kit could turn out to have some special powers or a connection to Naruto's own chakra.
Well, Naruto would probably immediately try to free her. He's the kind of person who can't stand seeing someone in distress. He might use his ninja skills to break the chains quietly if he's worried about enemies nearby. Then he'd likely ask her who she is and how she ended up there.
One idea could be that Naruto mistakes the spaceship for a really strange summon. He tries to communicate with it using his ninja skills, like sending chakra signals, thinking it's some sort of new, unknown creature. This could lead to all sorts of comical misunderstandings as the spaceship's technology reacts in unexpected ways to his attempts.
Once Naruto finds out about the Uzumaki clan in the fanfiction, it could change his relationships. He may become closer to certain characters who have a connection to the Uzumaki. For instance, if there are other characters with Uzumaki blood, they might form a special bond. Also, this discovery could influence how the village views him. Some might see him as an even greater asset now that they know he has such a powerful clan background, while others might be more wary of his potential.
The baby might have some special powers that start to show up. Yami Yugi has to figure out how to control and help the baby develop these powers in a positive way. For example, if the baby can create portals, Yami Yugi will need to teach it when and where it's appropriate to use such a power.
Next, Sirius might immediately send for help from other members of the Order of the Phoenix. He knows that Hermione's knowledge and skills are crucial for the fight against the Dark Arts, so he wants to ensure she gets the best care.
In the fanfiction, Loki could take Peter under his wing. He has a lot of power and knowledge, so he might train Peter to be more confident and able to defend himself. Loki might also use his magic to make Peter invisible when the bullies are around, so Peter can avoid them until he's ready to face them. And Loki would definitely give those bullies a stern warning in his own menacing way.
There are many possibilities. Maybe Ash discovers that Drati's injury is part of a larger conspiracy. Or, it could bring Ash and Drati closer together as they go through this ordeal.
Well, in the fanfiction, Harry might first try to find the owner of the cat. He could use magic to see if there are any identification spells on the cat. Then, he might take it to Hogwarts. The cat could be a magical cat with special abilities, like being able to talk or lead Harry to a hidden place in the school.
In some fanfictions, when Naruto finds a cave in Wave, he might discover a hidden treasure. This could be a special weapon or some ancient scrolls that hold powerful jutsu. It could also be a place where a hermit or a powerful being once lived, and Naruto may find clues about a long - lost technique or a way to defeat a great enemy.