after the gods create Enkidu, He meets with Gilgamesh for the first time and they begin to Fight. Enkidu loses to Gilgamesh. After Gilgamesh kills a forest god, insults the goddess of love, AND kills a great sacred bull the gods choose to punish Enkidu. Unfortunately he falls sick, And dreams about the underworld, where people eat clay bread, and dust. He suffers for many dies and dies.
Terrified of death and the stories of Enkidu's nightmares, Gilgamesh sets off on a journey to find the key to immortality.
Utnapishtim then challenged Gilgamesh to stay awake for six days and nights. Because of already being so tired, Gilgamesh fell asleep.
After failing his previous task, he was then told to go to the bottom of the ocean, where a special plant lied. He successfully retirevs the plant.
(I could not find a snake)
After bathing in the well, a serpent steals the plant from Gilgamesh. The serpent then returned into the depths of the well, with the plant.
After apologizing to urshunabi, Gilgamesh also realists he does not need to live forever, and he learns to value his life, and his role as king of Uruk.