Goddess of youth, her name means "The Rejuvenating One". She is married to Bragi and is the keeper of the apples which keep the gods eternally young. The only myth we have concerning Idun is the story of her kidnapping by the giant Thiazi.

Odin, Loki, and Hoenir, were on one of their travels when they happened upon an ox and, since they were so very hungry, decided to cook it. For some reason however, the meat would not cook.

As they were trying to discern the reason for this travesty a huge eagle perched above them in an oak tree told them he knew why the ox wasn't cooking and would show them how to roast it if they would first let him eat his fill.

No sooner had they agreed than the eagle ate such a great portion of the ox that Loki got angry, took a pole and struck at the eagle. The eagle flew upwards with the pole and Loki stuck to the other end. He told Loki he would only let him down if Loki agreed to kidnap Idun and her age-defying apples.

When the gods arrived in Asgard Loki did as he had promised and lured Idun outside of Asgard to where the eagle was waiting. The eagle, who was none other than the giant Thiazi in his eagle skin cloak, took Idun to his home called Thrymheim in the mountains of Jotunheim.

The gods began to quickly age once the source of their immortality had been stolen so they decided Loki should have to go and fetch her back. After all, he was the one who had caused all the trouble.

Loki borrowed Freya's falcon cloak and flew to Thrymheim where he found Idun alone. He turned her into a nut and flew back to Asgard as fast as he could, holding Idun in his claws.

As soon as Thiazi returned and found Idun gone, he put on his eagle cloak and flew towards Asgard. His wings beat so quickly and with such force that he caused strong storm winds to hamper Loki's escape. The gods could see the eagle coming in pursuit of Loki so as soon as Loki was safe inside the bounds of Asgard they built a bonfire which set fire to Thiazi's wings. Once the giant fell to the gound the Aesir killed him. Afterwards, his daughter Skadi came to avenge his death.