Enmerkar is the Lord of both Unug and Kulaba, described as the "city which rises from heaven to earth" [sic].
Urgirinuna promises the chief minister, Ansigaria, that he can make Enmerkar submit to Aratta.
Ansigaria agrees to fund this mission, and the sorcerer then proceeds to Eresh, the city of Nisaba, where he somehow manages to sabotage the dairy livestock of Enmerkar.
This act of the sorcerer's sabotage was observed by the livestock keepers, Mashgula and Uredina, who then pray to Utu, the sun god, for help.
A sorceress of Eresh called "Wise Woman Sagburu" then appears, and outperforms Urgirinuna's sorcery in a series of contests: each time Urgirinuna magically brings an animal from the water by casting in fish eggs, she brings a predator from the water in the same way, which then eats the animals he produces.