It's probably about the adventures in the 'Night at the Museum' world, but in a form suitable for younger readers. The 'AR' might add some augmented reality elements to make the reading experience more engaging.
Night at the Museum is not based on a true story. It's a fantasy adventure that was made up to delight audiences with its imaginative plot and characters.
There was a young girl who got locked in the museum overnight. She was exploring the old paintings section when she noticed that the eyes in one of the portraits seemed to be following her. As the night grew darker, she heard the sound of footsteps echoing through the halls. When she turned around, she saw a shadowy figure that resembled one of the knights from the medieval exhibit. It started to move towards her menacingly. She hid behind a statue and held her breath, praying that the figure would go away.
One idea could be that the characters from 'Night at the Museum' accidentally end up in the setting of 'Tower Heist'. The museum exhibits come to life in the high - rise building where the heist is taking place. Maybe the night guards from the museum team up with the 'Tower Heist' crew to stop an even bigger threat that is targeting both the museum artifacts and the money in the tower.
One possible fanfiction could be about a son or daughter who has a special night at the museum with their dad. Maybe the dad has always been interested in history and the museum is his favorite place. They could explore the exhibits together and the child discovers a newfound love for history through their dad's eyes.
In the 'night at the museum novel', the most obvious main character is the night guard. He is the one who has to deal with the unexpected events when the museum awakens at night. He is usually the protagonist through which we experience the story. Besides him, there could be an old curator who might have some knowledge about the strange occurrences in the museum. And then there are the living exhibits. For example, a Roman centurion or an Egyptian pharaoh who could play significant roles. These characters from different historical periods and their interactions with the guard and each other form the core of the story.
The main plot often involves the museum coming to life at night. The exhibits, which include historical figures and artifacts, start to move and interact. There are usually adventures and challenges as the characters, like the night guard, try to manage the chaos and also learn about the history and secrets of the museum's exhibits.