Johan en de Alverman plot
The story begins when Johan Claeszoon, a young doctor and just graduated in medicine, is on his way to the water mill of his uncle Willem and aunt Liezelotje to stay with them. His journey takes him through the Nekkersbos, where he discovers a small, funny man who speaks an unintelligible language and is trapped in a fox trap. Johan frees the strange male who turns out to be an Alverman and comes from the land of Avalon. King Alberic has banned him because of his curiosity and he is not allowed to return until he brings something useful for the people of Avalon.