Gilgamesh meets Enkidu and they have a fight. After the fight they become best friends.
They decide to go on an adventure to kill the forest god and a great sacred bull. They cut down all the trees. They also insult the goddess of love.
The gods decided to punish Enkidu for Gilgamesh's poor choices. Enkidu starts to have horrible dreams about the after life. Enkidu dies. Gilgamesh has a fear of death.
Gilgamesh goes on a quest to to find the secret of eternal life. He goes through the wilderness, 12 leagues of darkness, and lot of other cases.
Gilgamesh and Urshanabi got a plant that would give them eternal life that grew under water, that has a prickle like thorn, like a rose. A serpent took the plant away and ate it. Gilgamesh had decided to share the plant with the elder men then he would eat it too.
Gilgamesh returns to Uruk as a wise man. He is also selfless. Gilgamesh learned to be a better king.