The story begins with the king of Argos, Acrisius and his daughter named Danne. Acrisius went to the Oracle at Delphi and told him that his daughter's future son will grow up and kill him so he put her in a locked chamber f bronze. but Zeus had already seen her, loved her, and visited her. Than Acrisius put Danne and her son in a box and cast it into the sea. which ended up at the island of Serphus.
King Polydectes had fallen in love with Danae. Polydectes wanted to marry Danae but he knew that her son might cause trouble for him. Polydectes came up with a plan and persuaded young Perseus to get the head of Medusa the Gorgan, hopeing it will turn Persues to stone.
Hermes gave Perseus a magic sword to use on his journey. Athena gave him a mirrored shield and told him where to find the nymphs of the north and the Graeae. Perseus fond away to kill Medusa. The three sisters of and the guardians of the Gorgons gave Perseus winged sandals, a wallet that would expand to any size, and a cap of invisible. Perseus stole the Graea eye, making them temporarily blind and keeping it until they give him the information he is looking for.
When Perseus reached the cave of the Gorgons, he found them asleep. Wearing the winged shoes, he was able to fly near Medusa. Guided by her reflection in his mirrored shield, he used his sword to cut off her head before she awoke. From the neck of her headless body, her child, Pegasus, was born and set free. The other two Gorgons woke up and gave chase, but they couldn't see him for he was wearing his cap of invisibility.
Perseus passed near Joppa where he saw Andromeda, a beautiful princess chained to a rock. Perseus, who had fallen in love with Andromeda at first sight, offered to kill the monster if he was allowed to marry her. Her father, the king, agreed, and Perseus turned the monster to stone by showing it the Gorgon's head. Perseus found his mother imprison at the alter where King Polydectes had confined her until she agrees to marry him or die of hunger. Perseus turned Polydectes to stone.