It was directed by Disney animator Jeffrey J. Varab and cartoonist Peter Madsen, the latter of which is one of the writers and the main artist on the Valhalla comics.

The movie takes plot elements told from the three comic albums "Cry Wolf", "The Story of Quark" and "The Journey to Útgarða-Loki".

Thor and Loki habitually visit Midgard (Earth), and one evening they take refuge for the night at a lonesome farmhouse, inhabited by a couple of ordinary Viking peasants and their two children, a boy named Tjalvi and his younger sister Röskva.

Thor generously offers one of his goats which is dragging his chariot, as a feast dinner for all of them, but strongly warns any of the members of the household from breaking the bones.

Once they arrive, they soon discover that Røskva has stowed away in the chariot, and so she is allowed to follow the company and her brother to Thor's home Bilskirnir.

One day Loki shows up with a small nonverbal jötunn boy named Quark, who almost immediately causes havoc in the thunder god's home.

He acts as a lazy and cruel master of the house and the children and Quark finally run away to look up the mighty chief of the gods Odin, who lives in nearby Valhalla and who they suppose will help them against the unfair behaviour of Loki.

Suddenly, Thor shows up and brings the children back to Bilskirnir by force where he demands that Loki returns the boy to Útgarðar.

The group travel Útgarðar, where the jötunn-king Útgarða-Loki offers to take Quark back if they can overcome a series of challenges.

The children realize that the jötunns are using magic to cheat: the drinking-horn is secretly connected to the sea, Loge is actually an insatiable fire-spirit, Útgarða-Loki's cat is in fact Jörmungandr, and the old woman is old age itself!

They managed to raise a small budget for the feature film adaptation before the project was eventually passed to production companies.

The Danish release version of the film features the voices of Dick Kaysø, Preben Kristensen, Laura Bro and Marie Ingerslev.

The financial collapse of the Valhalla-production also brought down its sister company, LASER, which had been developing an animated feature film adaptation of Gilgamesh and a laserdisc video game, Pyramid, about a female hero battling various enemies inside an ancient temple structure.

Film A/S, which to date is Denmark's most successful animation studio, producing frequent artistic triumphs and box-office hits.