Hilda and the gang take the train to Tofoten to visit Great-Aunt Astrid for a relaxing holiday — but adventure soon comes knocking at their door.
Convinced that fairies exist in Tofoten, Hilda starts investigating around town... only to uncover a troubling mystery involving her own family.
An ancient Faratok Tree transports Hilda and Wood Man to an alternate universe, where a feud rages between giants and a not-so-mighty giantslayer.
After their fellow Sparrow Scouts dub them "The Freaky Friends," Hilda, Frida and David resolve to have the most ordinary river trip imaginable.
When Hilda's father comes for a surprise visit, she joins him on a mysterious errand to the castle ruins on behalf of a shady man known as "The Polecat."
Hilda and her mother go on a camping trip, but Johanna suspects she's visited this forest before. Does the forest remember her, too?