While on summer vacation, Jenny and her kid brother Frick encounter the new Summer Island resident who inhabits the spooky looking cottage next door.
"Wanda" has tiny pale eyes, a squarish body, long boney arms and legs and wears fuzzy bedroom slippers.
Having first met on the beach, they see her again that evening, in the moonlight over the beach dunes, wandering through the tall sea oats. She is singing a peculiar sounding song in a high voice and has a Rhino on a leash! Frick whispers a name for her then and there; "The Sand Witch." It is the beginning of Jenny & Frick's wildest vacation ever!