A plot twist could be that Bartneder thinks he is time - travelling to different historical periods, but in reality, he is just travelling to different dimensions that are parallel to his own time. And in these dimensions, the people he meets are actually versions of people he knows in his own world, but with very different personalities and fates.
I'm not sure who 'Bartneder' is exactly. But a time - travelling story could be like this: Bartneder, a curious scientist, invents a time - travelling device. He decides to go back to the Renaissance period. Once there, he is amazed by the art and architecture. He meets great artists like Leonardo da Vinci and tries to understand their creative processes. However, he soon realizes that his presence might be changing the course of history, so he has to find a way to return to his own time without causing too much disruption.
One possible plot could be that Miko is a time - traveler. The timer she has is related to her ability to jump through time. She has to use the timer accurately to get to the right time period to prevent a disaster from happening in the future or past.
A plot twist could be that the character finds out that they are on the run not because of something they did, but because they have some special ability or knowledge that others want to keep secret. So, instead of being a victim of false accusations, they are now in a situation where they have to protect this secret while still evading capture.
A possible plot twist is that the prince is actually a vampire. He fell in love with Cinderella at the ball because he smelled her sweet blood. When he discovers her true identity, he tries to turn her into a vampire too, but Cinderella has her own dark secrets and resists. Also, the pumpkin carriage could be a death trap, and as soon as midnight strikes, it crushes everyone inside instead of just turning back into a pumpkin.
Well, in the 'connie short story', a plot twist might be that Connie is on a journey to find something, like a lost heirloom. But all along, what she's really looking for is within herself. Or perhaps she meets a stranger who she thinks is going to help her, but in the end, the stranger has been using her for their own gain. And it could also be that Connie discovers that her family has a big secret that changes everything she thought she knew about her life and her identity.
Perhaps a character who was thought to be an ally in the arena turns out to be a traitor, leading to a major shift in the story's direction. Or it could be that the prize for winning the arena is not what it seems, like it comes with a dark or unexpected consequence that the characters only discover after achieving victory.
One possible plot twist could be that the spiders turn out to be intelligent and have a complex society. Maybe they are not just mindless killers but have a purpose for trapping the characters in the valley.
One possible plot twist could be that the king falls in love with a commoner while in disguise and has to figure out how to handle this relationship when his true identity is revealed.
One possible plot twist could be that the 'prince' is actually in an arranged relationship with someone else of the opposite sex, but falls in love with Cinderella anyway. Another could be that Cinderella's family discovers his plan to go to the ball and tries to stop him in a more extreme way because of his homosexuality.
The plot twist could be that the 'fake santa' is an alien in disguise. It has come to Earth during Christmas time to study human emotions. But it doesn't understand the concept of Santa properly and ends up scaring people instead. As the story progresses, the alien realizes its mistake and tries to correct it by using its advanced technology to create a real Christmas miracle for the town, thus turning from a scary figure to a somewhat heroic one.