In this novel, the alien might be a lost one from its fleet. It stumbles upon the cabin where the family lives. The family initially thinks it's just a strange animal or something. But when the attacks start, they realize it's an otherworldly creature. They could barricade themselves inside the cabin at first. Then they might try to find a way to communicate with the alien. If that fails, they would have to resort to more drastic measures to protect themselves like using fire or any weapons they might have in the cabin. It would be a story of survival against an unknown and powerful enemy.
The family members, of course. There could be a father who is brave and tries to protect everyone. A mother who is smart and helps come up with plans. And their children, perhaps a teenage son who is strong and can assist his father, and a younger daughter who might be the one to find a crucial clue to defeat the alien.
One example could be 'Alien Invasion: The Family's Struggle'. In this type of novel, the family might be trapped in their home when the alien attacks start. They have to use their wits and whatever resources they have at hand to survive.
Often, it could begin by introducing the family. We get to know their normal lives, their relationships, and their little quirks. Then, out of nowhere, there's a sudden chaos. An alien spacecraft crashes nearby or some alien creatures start emerging from the sewers or the woods around their house. The family realizes they are trapped and the danger is very real.
The plot might involve the dragon seeking revenge on the Freys for some past wrong. Maybe the Freys had wronged someone the dragon was attached to, so it attacks their strongholds, burns their lands, and causes chaos among them.
In this fanfiction, perhaps Naruto could be under some sort of mind control. Maybe an enemy has found a way to manipulate him into attacking the Leaf. It could also be a case where Naruto is misled about the true nature of the Leaf Village, believing it has committed some great wrong that warrants his attack.
One possible plot could be that Kakashi is under a genjutsu. In this fanfiction, an enemy ninja might have cast a powerful genjutsu on Kakashi, making him see Naruto as a threat to the village. So, Kakashi attacks Naruto, but Naruto, being the understanding person he is, tries to break the genjutsu instead of fighting back right away.
Perhaps there's a time - travel element involved. Naruto from the future, who has been through some horrible experiences, travels back in time and, in a state of confusion or rage, attacks Kushina. Or it could be that a powerful villain has the ability to manipulate Naruto's emotions and uses that power to make him turn on his mother. This would create a very complex and dark plotline that challenges the normal Naruto narrative.
In this kind of fanfic, perhaps Harry has finally had enough of the Dursleys' mistreatment. He might use his magic in a moment of rage. Maybe he starts by levitating Dudley to teach him a lesson after one too many taunts. Or he could use a spell to make Aunt Petunia's precious china smash, as a way of getting back at her for all the years of neglect and cruelty.
Well, it could be about an alien race that has a creature similar to a black panther which has special abilities. Maybe the black panther - like alien is a key to unlocking some ancient power or secret on a distant planet. For example, a group of explorers find this planet and encounter the alien black panther which leads them on a journey through dangerous terrains and they have to figure out how to communicate with it to uncover the mystery.
Well, perhaps in this fanfiction, the Athena Cabin is facing a threat that only Percy can help with. As Percy spends more time there, he starts to develop feelings for a particular camper. The 'lemon' part could be that they share some secret, intimate moments in the quiet corners of the cabin. And along the way, they also have to deal with the other campers' reactions and the overall politics within the cabin, which is full of intelligent and opinionated demigods.