In 'Thea Stilton and the Dancing Shadows', Thea probably goes on an exploration. There could be elements like a new place she discovers where the dancing shadows are present. Maybe she teams up with her friends to figure out the origin and meaning of these dancing shadows. It could be that they are a sign of something magical or a mystery waiting to be solved.
They are likely to have engaging illustrations that bring the stories to life. The stories might be full of adventure and mystery, with unique characters.
In 'Thea Stilton and the Secret City Story', it probably revolves around Thea exploring the secret city. She could be on a quest to solve a mystery that the city holds, like finding out about its origin or some lost treasure. Along the way, she may have to deal with different obstacles and interact with both friendly and unfriendly inhabitants of the city.