Perhaps the Cheshire Cat takes Alice on a time - traveling adventure within Wonderland. They visit different eras of Wonderland's history, from its creation to possible future scenarios. Along the way, they learn about the significance of the cat in Wonderland's lore and how Alice is connected to the overall fate of this strange world. This would allow for a lot of exploration of the world - building aspects of Wonderland.
Perhaps in the fan fiction, the Cheshire Cat is in trouble and Alice has to use her wits to save it. She could face challenges like solving riddles set by other Wonderland characters. It would be a role - reversal from the original story.
Rather than the Cheshire Cat being the mysterious figure that it usually is, it could be shown as a more vulnerable character in relation to Alice. Maybe it depends on Alice for some kind of emotional support. This would flip the typical dynamic and show a different side of the cat. For instance, when the cat is facing a threat that it can't easily disappear from, it turns to Alice for help.
A possible plot could be that Alice is in trouble. Maybe she has angered the Queen of Hearts by accident. The Cheshire Cat, being her friend, decides to help her. It uses its magic to hide Alice in a secret place that only it knows. Then, the cat goes on a mission to convince the Queen to forgive Alice. It tells the Queen stories about Alice's kindness and how she has helped the other creatures in Wonderland. In the end, the Queen relents and Alice is free to continue her adventures.
The Queen of Hearts would also be an interesting character to include. Her tyrannical nature could create conflict. Maybe she gets jealous of the friendship between Alice and the Cheshire Cat and tries to break them apart.
Perhaps in the fanfic, Alice Angel has lost her memory. Henry, who has some knowledge about the strange place they are in, tries to help her regain her memories. Along the way, they discover secrets about the place and their own pasts. Their relationship grows as they rely on each other for support, and Alice Angel starts to see Henry in a new light, different from how she might have perceived others before.
One plot idea could be that Catwoman and Black Cat team up to steal a valuable artifact that has been causing chaos in the criminal underworld. They start off as rivals, each with their own motives, but as they work together, they begin to respect and even like each other.
One idea could be a time - travel plot. For example, Ladybug and Cat Noir are sent back in time to when the Miraculouses were first created. They have to figure out how to get back to their own time while also protecting the secrets of the Miraculouses in the past. Another idea is a role - reversal. Maybe Ladybug loses her powers for a short time and Cat Noir has to step up even more and take on some of her traditional responsibilities. He could struggle with the different approach needed for leadership.
A good concept for a Blood x Alice fanfic might be a mystery - solving plot. Suppose there are strange disappearances in their world, and Blood and Alice team up to find out what's going on. Along the way, they discover secrets about their own pasts and the true nature of their world. Or, you could write a fanfic where they go on a journey to find a magical object that has the power to change the fate of their world. This would involve a lot of adventure, with them facing different obstacles and enemies.
One idea could be that Harry discovers a hidden portal that leads him to the Twilight world where he meets Alice Cullen. They then team up to fight a new dark force that is threatening both their worlds.
Once upon a time, Alice was wandering in the Wonderland again. She felt a bit lost and lonely. Suddenly, the Cheshire Cat appeared. 'Hello, Alice,' it said with its ever - present grin. Alice was glad to see a familiar face. 'What new adventures do you have for me today?' she asked. The Cheshire Cat just blinked and led her to a strange, glowing forest. There, they met magical creatures that Alice had never seen before, and they had a wonderful time exploring together.