When he takes them with him on a magical journey, they end up in a strange world in the garden of the sorceress Ga-gacca. Sandra is hit by her magic and the others get their hands full trying to save her.
The series about the magical falcon is written by Peter Gotthardt and illustrated by Jan Solheim. Also read the other books in the series about The Magical Falcon:
The Falcon in Chains
The Demon Queen
The Dragon King's Daughter