What could be a good plot for a 'castle with training' fanfic?

A young peasant boy with great potential could be a main character. He is chosen from his village to go to the castle for training as a knight. There could also be an old, grizzled knight as his mentor, guiding him through the tough training regime.

One possible plot could be that the castle undergoes a magical transformation. Maybe it starts to grow and expand, creating new rooms and corridors filled with hidden secrets. The characters in the fanfic then embark on a journey to explore these new areas, facing various challenges along the way, like magical traps or strange creatures.

Well, it could be about a magical curse. Maybe an evil sorcerer casts a spell on the castle and it slowly fades away. The characters then have to go on a quest to find a way to reverse the spell and bring the castle back.

It could be about a castle that was struck by some sort of disaster, like a powerful magic spell gone wrong or a massive earthquake. The people in the castle might be trapped and paralyzed, unable to move or escape. Then, a group of brave adventurers could come along to try and rescue them, facing many challenges along the way.

One idea could be that a young hero, recovering in the convalescence castle, discovers a hidden passage that leads to a magical garden. There, they find a rare flower with healing powers that could potentially cure a widespread disease in the kingdom.

It could be about a grand ball held in the castle at night. People from all around come in their finest attires. There are mysteries and secrets lurking in the castle's chambers, and the main character might be on a quest to uncover them during this memorable night.

Well, it could be about Alexis suddenly vanishing from Castle's life in some mysterious way. Maybe she gets involved in a top - secret case and has to go undercover, leaving Castle worried and desperate to find her.

Well, it could be about agents on a mission in the 8th Ices Castle. Maybe they're searching for a hidden treasure or trying to stop an evil force that lurks within the castle. The agents might have to face various challenges like ice traps and powerful ice - based creatures.

Well, it could be about the character in the castle dealing with the challenges of being paralyzed waist down. Maybe it's about their journey to regain some form of mobility, or how they adapt to a new way of life. It could also involve the relationships they have with other characters in the castle, like how their friends or family support them through this difficult time.

The plot could be centered around a misunderstanding. Beckett might think Castle is interested in someone else, and this causes some tension between them. But as they work through the case, they start to realize their true feelings for each other. The first kiss could come when Castle finally clears up the misunderstanding, and they share a tender moment.