Ishtar and Ereshkigal are the daughters of the Moon God Sin and sisters of the Sun God Shamash and members of a family of deities called the Anunnaki who arrived from the heavens to the earth many thousands of years ago. Ishtar, as Inanna, was the original goddess of love and the forerunner to all of the fertility goddesses that followed.

Ereshkigal is described as being Inanna's older sister. Who killed Ishtar? Once arriving at Ereshkigal's home, Ishtar descends through the seven gates of the underworld. At each gate she is instructed to remove an item of clothing. When she arrives before her sister, Ishtar is naked, and Ereshkigal kills her at once.