Hilda and her companions journey by train to Tofoten for a peaceful holiday with Great-Aunt Astrid. However, tranquility proves fleeting; adventure awaits them just around the corner.

Hilda was certain of fairies in Tofoten, and so began her inquiries throughout the village. Her search, however, led her not to whimsical sprites, but to a disquieting secret buried deep within her own family history.

The Faratok Tree, old beyond reckoning, shifted Hilda and Wood Man into a world unlike their own. There, a bitter conflict consumed the land, a feud between colossal giants and a surprisingly vulnerable slayer of them.

Following their designation as "The Freaky Friends" by their fellow Sparrow Scouts, Hilda, Frida, and David determined to undertake the most unremarkable river journey possible.

Hilda's father arrived unexpectedly, and she found herself accompanying him on a clandestine task. The destination was the crumbling castle, a place shrouded in secrets, and the request came from a man known only as "The Polecat," a figure …

Hilda and her mother embarked on a camping trip, though Johanna felt a strange familiarity with the woods. Could the forest hold a memory of her as well?

Frida convened a town hall, seeking answers to the perplexing thefts plaguing the nisse community. Meanwhile, Hilda wrestled with the enigmatic messages crackling from her radio.

Hilda ventures into the fairy mound in search of her father, where she begins to piece together unexpected truths about her family. But the path to understanding is fraught with peril.