One possible plot could be that an evil villain discovers a new power that can turn Ladybug into stone. Ladybug is caught off - guard during a battle and gets turned. Chat Noir then has to find a way to reverse the spell. He might search for a magical artifact or seek help from other Miraculous holders.
In a 'Miraculous Ladybug Turns to Stone' fanfiction, it could start with Ladybug investigating a strange occurrence in Paris. She stumbles upon a hidden lair where a powerful and long - forgotten enemy lies dormant. When she gets too close, this enemy activates a trap that turns her to stone. Chat Noir feels her absence immediately. He teams up with Alya, who has noticed Ladybug's disappearance. Together, they follow a series of clues that lead them to believe that the key to turning Ladybug back lies in a forgotten Miraculous power. Chat Noir has to face many challenges and enemies on his way to find this power and save Ladybug.
It could be a new villain created specifically for the fanfiction. Maybe an ancient sorcerer who was trapped for centuries and now wants revenge on the modern - day heroes. He has the power to turn things to stone and sees Ladybug as the main threat to his plans.
One possible plot could be that Jagged Stone discovers the true identities of Ladybug and Cat Noir. Maybe he gets involved in one of their battles accidentally and then becomes determined to help them keep their secret identities safe while also using his fame to distract Hawkmoth.
One possible plot could be that Hawkmoth manages to finally corrupt Cat Noir. He might start causing chaos in Paris, attacking Ladybug instead of helping her. Ladybug would then be in a difficult situation, having to either try to save her partner or defeat him to protect the city.
Well, it could be about Ladybug and Chat Noir finally revealing their identities to each other and having to deal with the consequences. Maybe they face a new, more powerful villain that is a threat to all of Paris and they have to use their combined powers in new ways.
One possible plot for a Miraculous Ladybug beach fanfiction is that Hawkmoth sends an akuma to the beach during a big surfing competition. Chat Noir is there to compete, and Ladybug has to show up and they end up having to fight the akuma while also trying to protect the civilians at the beach. They could also have some cute beach - themed banter in between the fight scenes.
One possible plot could be that the peacock miraculous has a new holder. This new holder might be a bit of an anti - hero at first. They could use the peacock's powers to create sentimonsters for their own gain, like stealing valuable items. But as the story progresses, they start to see the harm they're causing and slowly turn towards the side of good, joining Ladybug and Chat Noir in their fight against Hawk Moth.
The fanfiction could center around a new student who is secretly a villain in disguise. They try to disrupt the school play which is about the Miraculous Ladybug and Chat Noir's adventures. Ladybug and Chat Noir have to figure out who the new student really is and stop their evil plan before the play is ruined.
One possible plot could be that Ladybug and Cat Noir, in their civilian forms Marinette and Adrien, have a sleepover with their friends Alya and Nino. During the sleepover, they play some Miraculous - themed games. Maybe they create their own Miraculous - inspired challenges, like a kwami - hiding game where they have to find a small object representing a kwami. And then, late at night, there could be a false akuma alert that turns out to be just a malfunctioning Ladybug - themed alarm. This could lead to some comical moments as they all scramble to 'transform' before realizing it's a false alarm.
One possible plot could be a rift within the Miraculous team. Maybe there's a disagreement over how to use the Miraculous powers. Some might think they should be more aggressive in fighting villains, while others prefer a more diplomatic approach. This could lead to two factions forming, just like in a civil war.
Maybe Ladybug and Chat Noir have finally defeated all the major villains and they are now retired. They could be passing on their Miraculous to a new generation of heroes. Paris has become a much safer place with the lessons they've taught about good and evil.