One interesting plot could be a story where Draco Malfoy, after the war, is trying to redeem himself. Nymphadora Tonks, through some magical accident or plot device, has to work with him. They start off hating each other due to their different allegiances during the war. But as they face challenges together, like a new dark magic threat emerging, they gradually learn to respect and even like each other. Their different magical abilities - Draco's Slytherin cunning and Tonks' Metamorphmagus skills - could be used in creative ways to overcome the obstacles.
In an alternate universe, their relationship could develop in a very different way. For example, if the wizarding world had no concept of pure - blood supremacy, Draco would not have the same prejudices he had in the original story. He might meet Tonks in a more positive setting, like at a magical research facility where they are both working on a project to improve inter - magical creature relations. Their relationship could start as a friendly professional one, and over time, they could develop deeper feelings as they discover each other's strengths and vulnerabilities.
One interesting plot could be the development of an unexpected friendship between the kidnapped character and Draco. Maybe they start to understand each other's motives and past traumas, leading to a change in their relationship from captor - captive to something more complex.
In some Draco Malfoy Marriage Law fanfiction, the plot might revolve around the political implications of the marriage law. Draco, being from a prominent pure - blood family, could be forced into a marriage to strengthen family alliances. This could lead to a complex story of love vs. duty, as he might actually have feelings for someone else not approved by his family.
One interesting story could be about their adventures during the Order of the Phoenix era. They might team up to solve a mystery within Hogwarts that is related to the dark forces rising. Another could focus on their relationship development, perhaps starting from their first meeting at an Order meeting and how they gradually grow closer.
One interesting plotline could be Tonks using her Metamorphmagus abilities to help Harry in his undercover missions. For example, she could change her appearance to distract the Death Eaters while Harry sneaks into a place. Another could be Tonks teaching Harry about the less - known magic that her family specializes in.
Another theme could be transformation, not just in the literal sense as Tonks is a Metamorphmagus, but also in the emotional and relationship sense. Her love might cause her to transform as a person, becoming more confident or more vulnerable depending on the situation in the fanfiction.
The contrast between the two universes. Percy Jackson is all about Greek mythology and demigods, while Nymphadora Tonks is from the wizarding world of Harry Potter. Combining these two different worlds creates a unique and exciting setting.
One common plotline is the relationship between Tonks and Remus Lupin during her pregnancy. How they deal with the challenges, like Lupin's concerns about his werewolf nature affecting their child. Another is how Tonks manages her Auror duties while being pregnant. For example, she might have to hide it from some colleagues or face discrimination.
A common plot in Draco Malfoy kidnapped fanfiction is that Draco kidnaps a fellow student to get information. He suspects that this student has knowledge about a hidden magical artifact or a secret spell that could help him gain power or status. Maybe he's fallen from grace in the Slytherin house or among the Death Eaters, and he thinks this piece of information will redeem him. Or perhaps he kidnaps someone who he believes has seen something they shouldn't have, like a Slytherin plot against the school, and he wants to keep them quiet.
There could be a fanfiction where Scorpius and Draco go on a magical adventure together. Maybe they discover an ancient magic that was lost for centuries and have to keep it a secret from the wizarding world. This would explore their relationship as father - son and their courage in the face of danger.