When Minerva found out that neptune was dating medusa, she became so enraged that she turned medusa into a gorgon.
medusa terrorized the land that she was in, so the gods sent perseus to slay her
Perseus did as he was told and slew medusa, and took her head
When Perseus was flying back to olympus, he found a girl named Andromeda, who was in major trouble beacuse she was going to be a sacrifice for a sea monster, so he went to the parent and said that if he could have andromeda's hand in marriage, he would slay the monster
They agreed so he slew the monster and took andromeda to olympus to get married
Persues married andromeda and they lived happily ever after.