Auzou Book for aurora tome 3 l'ours-monde

The Aurora and its crew set off to explore the volcanic islands of the north, where Arthur and Maudie's father once discovered the Brightstorm butterflies and where a species of extra-lucid bear is said to live… But the relentless Eudora Vane, who pretended to have lost her memory, is hot on their trail. Will they be able to find their lost family and protect their natural discoveries from their enemies' greed?