The Elf Queen's Children 1: An Unknown World - Peter Gotthardt

When the elf queen's children take a ride with their friends, they meet an evil wizard. He hits them with his magic, and everything turns black. When the children wake up, they find themselves in an unknown world, where many dangers await them. This is the first in a series of eight books about the The Elf Queen's ChildrenThe elf queen's children find themselves in a foreign world. They have a long, dangerous journey ahead of them.