One interesting plot twist could be that the Beast is actually a cursed prince from a rival kingdom, and the curse was placed by an evil sorcerer who wanted to start a war between their kingdoms. Another could be that Beauty has a hidden power that she discovers while in the castle, and this power is the key to breaking the curse in a completely unexpected way. Maybe she can communicate with the enchanted objects in a way that no one else can, and they reveal a secret about the curse.
One interesting plot twist could be that Belle actually has a hidden power that she discovers while in the Beast's castle. This power could be related to time-travel, which ties into the 'Back in Time' aspect. Maybe she can manipulate time to prevent certain events from happening in the past, like the Beast being cursed in the first place.
In some Beauty and the Beast pregnant fanfictions, a plot twist could be that the source of the Beast's curse is actually related to a prophecy about his future offspring. So, when Belle becomes pregnant, it sets off a chain of events that were foretold long ago. This could involve other magical beings coming to the castle to either protect or harm the baby. Another plot twist might be that Belle's pregnancy gives her the ability to communicate with the forest animals in a more profound way than before. They then become her allies in protecting the baby from any threats that may come from the dark corners of the enchanted forest.
Maybe Emma is actually from an alternate timeline where Regina was the one who sent her to our world for a greater purpose. As the story unfolds, this revelation makes Regina question her own motives and actions towards Emma throughout their time together.
Many fanfictions expand on their relationship by exploring their pasts. They might show how the Beast's life was before the curse, and how that affects his relationship with Beauty. Also, Beauty's family life and her upbringing can be delved into, which in turn helps to explain how she reacts to the Beast and how their relationship grows. For instance, if Beauty had a difficult family life, she might find solace in the Beast's company more quickly. And as for the Beast, his past experiences could make him more or less open to love, and these aspects are often explored in fanfictions.
A great plot twist could be that the 'beast' is actually a dark wizard in disguise. He pretends to be cursed to lure in the 'beauty' who is a powerful young witch. But as the story progresses, she discovers his true identity and has to use her magic to defeat him instead of breaking a curse with love.
One interesting plot twist could be that the Beast is actually under a double curse. Not only is he a beast, but he also has a memory curse that makes him forget his true self. When Belle discovers this, she has to find a way to break both curses.
Another plot twist might be that the Beast is not actually a 'beast' in the traditional sense. In the fanfiction, he could be a wizard under a false appearance curse, and Hermione discovers this. It changes the whole dynamic of their relationship because now they are both magic - users, and she has to figure out how to break the false - appearance curse rather than the typical Beauty and the Beast curse.
Perhaps a plot twist is that the Beauty is actually a parahuman with a power that she doesn't fully understand until she meets the Beast. Their connection then unlocks a new aspect of her power, changing the dynamic between them and their goals. For example, her power could be related to empathy, and the Beast's presence intensifies it to the point where she can influence the emotions of other parahumans around her.
One interesting plot twist could be that Hook is actually a long - lost relative of Peter Pan. Maybe they are related through some ancient magic or a family secret that was lost over time. This would completely change their dynamic, from sworn enemies to having a complex family - related relationship.
One common plot twist could be that the pregnancy is a result of some magic gone wrong. For example, a spell meant for something else accidentally causes a character to become 'pregnant' with a magical entity. Another could be that the pregnancy is a way to save Neverland, like the new life will bring a power that defeats an evil force.