The Epic of Gilgamesh is a foundational work of Sumerian mythology, primarily centered around the life of its main character, Gilgamesh, a historical king of Uruk. The epic explores themes of friendship, mortality, and the quest for immortality. Gilgamesh embarks on a journey with his companion, Enkidu, encountering gods and monsters while seeking wisdom. The narrative reflects the human experience and the eternal struggle to understand life and death.