Kidnapping of Idunn
When Hœnir, Odin and Loki had set off through the mountains, they came across a herd of oxen. Wishing to eat it, they killed one and roasted it over an earth oven. They realised the ox was not cooking, and then heard a voice in an oak tree. When they looked, they saw a giant eagle (Thiazi), who told them he was stopping the ox from cooking. He made a deal with them; if he could eat a portion of the ox, he would allow it to cook. The gods agreed but when the ox was cooked Thiazi came down and ate most of it. Loki prodded him angrily with a stick, but Thiazi caught Loki in his claws and flew away with him. Loki bargained for his release, eventually agreeing that, in place of Loki, Thiazi would receive Iðunn and her apples of youth.
Loki contrived to lure Iðunn from Asgard, claiming he found apples better than hers. She left Asgard with her apples in order to compare them wit Loki's, but Thiazi (again as an eagle) carried her off. Without Iðunn's apples, the gods began to age. They discovered that Iðunn was last seen with Loki and they threatened to kill him if he did not find a way to return her.
Loki transformed into a falcon and flew to Thiazi's palace, finding Iðunn alone (as Thiazi had gone out to sea). Loki turned her into an acorn and flew back to Asgard with her. However, Thiazi returned shortyl and, realising Iðunn's absence, pursued them. The gods saw Thiazi chasing after Loki and lit a fire. The fire burnt Thiazi's feathers and he fell to the ground, where he was killed by the gods while Loki and Iðunn safely reached Asgard.
Skaði, however, had learnt of her father's death and came to Asgard seeking vengeance. The gods offered her compensation; a place amongst the Asynjur and a husband from among the gods. Skaði accepted, though her husband had to be chosen only by his feet. Skaði saw a pair of soft feet and assumed it was Baldr. However, she realised after choosing him, it was Njord. Skadi and Njord lived unhappily until they separated. Thiazi's eyes were also placed into the sky as stars, by Odin.