A king in ancient Greece want a son, so he asked the oracle about it the oracle said no but his daughter would and her son will cause the king's death.
So he locks his daughter in a underwater prison but on day Zuse came into her chamber and soon they got married and had a child when the king found out he put his daughter and the baby name Perseus in a crate and into the ocean.
The crate cast ashore on an island, and years later the king fell in love with Perseus mother and the king ask Perseus to get him the head of a gorgon and at the wedding, Perseus was the only one that didn't a gift and he announced that he would get ahead of a gorgon.
He traveled till he had got to the Gray ladies so they could tell him where to go but they wouldn't so he took their one eye that they shared and would give it back till they told him where to go.
Then the gods came to give him gifts that he would use to kill Medusa a shield, a sword to break her skin and a bag to put her head because if he looked at her he would turn to stone.
Perseus had gotten to the gorgon cave and chop of her head and stuffed it into the bag and escape and returned to his mother and stepfather.