Auzou Book for the kingdom of the four walls volume 2 the forest of the elves

When the kingdom's capital is devastated by a mysterious swamp monster, Tristan and Alicia fear for the future of their world... On the King's orders, they are sent to the kingdom of the elves. Guided by young Gil-Estel, they discover an enchanted land of a thousand secrets, and must thwart many threats if they are to advance their quest and save the elven people from a terrible menace...