Thea Stilton and the Legend of the Fire Flowers is a very good book in a very good series. Paulina, Nicky, Colette, Violet, and Pamela (the Thea Sisters) are going to Hawaii for a hula contest. They get to go to a resort that is located right next to Hawaii largest volcano, Mauna Loa. Another group that is competing is called the Ruby Crew, who never liked the Thea Sisters. They try to ruin things for the The Sisters during the competition. But soon the Thea Sisters notice that the Ruby Crew are not their biggest problem. A message from the university they go to has found evidence that Mauna Loa is about to erupt, even though everywhere on the island says the volcano is fine.
To find out what happens read Thea Stilton and the Legend of the Fire Flowers as well as all the other Thea Stilton books. They are fun books with very happy and nice pictures.