Auzou Book for aurora tome 2 the legend of the firebird

Twins Arthur and Maudie set off in search of a missing explorer in the Eastern Isles with the crew of the Aurora. On the trail of this explorer, and closely followed by their ruthless aunt Eudora Vane, they discover that the man set out in search of a legend: a fourth continent, which is said to be protected from the rest of the world by dangerous creatures… Will they reach this extraordinary place, and more importantly, can they protect it from those who want to exploit it?