It might start with Daphne being in a vulnerable situation where Draco is about to cause her some harm, like maybe Draco is cornering her in a corridor at Hogwarts and making mean comments. Then Harry just happens to come along and decides to step in.
Typically, it could start with a description of the relationship between Draco and Daphne. Maybe Daphne has somehow crossed Draco, and he's out for revenge. Meanwhile, Harry is in the vicinity, perhaps on his way to class or on an errand. He notices Draco's aggressive stance towards Daphne and his instincts as a protector kick in. The fanfiction may also start by setting the mood, like it's a gloomy day at Hogwarts, and the tension between Draco and Daphne is palpable even before Harry arrives on the scene.
The fanfiction may start with an event that sets the stage for the conflict between Draco and Daphne. For example, there could be a competition at Hogwarts, and Daphne outperforms Draco in some way. Draco, being the prideful character he is, takes it badly and decides to target Daphne. Harry, who is always observant of such things around Hogwarts, witnesses Draco's initial actions towards Daphne and decides that he can't let it go on. So he gets involved right from the start to save Daphne from Draco's impending wrath.
Well, Harry might save Daphne from Draco because Harry is always the hero type. He doesn't like Draco's pure - blood supremacist attitude. Daphne could be a target of Draco's cruel remarks or actions just because she might not fully conform to Draco's ideas. Harry, being the defender of the underdog in many cases, steps in. Also, it could be that the plot of the fanfiction is building a new alliance or relationship web, and Harry saving Daphne is a key part of that, leading to new story developments.
Well, perhaps Harry uses his quick thinking and his knowledge of magical creatures. He might step in just in time, using a spell to distract Buckbeak before it can harm Draco. For example, he could use a simple levitation spell to lift a small object and draw Buckbeak's attention away from Draco.
In this fanfiction, Harry might also save Draco by appealing to Lucius' sense of self - preservation or family. He could threaten to expose some of Lucius' secrets or illegal activities if he doesn't let Draco go. Or, if there is some underlying family drama involved, Harry could use that to his advantage. For instance, if there's a feud within the Malfoy family that Harry is aware of, he could manipulate the situation in a way that makes Lucius back off and leave Draco unharmed.
In some fanfictions, Draco might have a change of heart due to his hidden feelings for Hermione. He could use his knowledge of the Death Eaters' plans and Voldemort's weaknesses to rescue her. Maybe he has some secret magic or an unexpected alliance that helps him get to Hermione just in time.
Daphne could be a fictional character created specifically for this fanfic. She might be a witch from a well - known wizarding family. Maybe she's a classmate of Harry's at Hogwarts or someone who has just heard about his situation and feels compelled to help.
Well, it could be that Harry discovers Draco's plan in advance. He then sets up a counter - plan. When Draco tries to harm Ginny, Harry jumps in, using his invisibility cloak to his advantage, surprising Draco and rescuing Ginny.
He might use the invisibility cloak. Harry could sneak into Azkaban unnoticed and then use magic to break Draco out of his cell. The cloak has served him well in the past, and it would be a simple yet effective way to get past the guards.
It could be part of a plot where Draco is given an assignment by someone in the wizarding world to save Harry from the Dursleys. He initially does it for self - serving reasons like getting in good with certain powerful wizards who are concerned about Harry's well - being. But during the process, he actually starts to care about Harry.
In some fanfictions, Draco might save Hermione from Bellatrix out of a new - found sense of morality. Maybe he has grown tired of the Dark side's cruelty. He could see Bellatrix about to harm Hermione and use his knowledge of the Death Eaters' ways to create a distraction. For example, he might pretend that there is an intruder in another part of the manor, causing Bellatrix to leave Hermione momentarily, giving Hermione a chance to escape or for Draco to help her further.
In fanfiction, the scenario of Draco saving Hermione from Viktor can be quite complex. It might be part of a larger plot where Draco is secretly working against some dark forces that Viktor has unknowingly become involved with. Hermione could be a key target, and Draco, having some inside information, decides to protect her. This could lead to a whole new relationship dynamic between Draco and Hermione, as she now sees him in a different light, and Draco starts to question his own allegiances.