The Cloud Castle is a book by Thea Stilton, a fictional mouse reporter and fashion icon. In this book, Thea and her friends, the Thea Sisters, travel to Alaska to attend an important conference held by an ecological association. They are there to learn about the importance of protecting the environment. However, when they arrive in Alaska, they discover that someone is upsetting the ecosystem by blowing up the ice with explosives!
Thea and her friends must use their detective skills to find out who is responsible and stop them before it’s too late.