There were three sisters who were called the matchless beautiful women by the certain town The three sisters named three Gorgon sisters and the name of the eldest daughter is Euryale, the name of the second daughter is Stheno, the name of the third daughter is Medusa. Their beauty was only appearance. But many men attracted by their beauty gave it many presents to marry them. Medusa swindled Poseidon to obtain power of God. Poseidon had a wife, but Poseidon who fell into a stratagem of Medusa and her sisters came to like her. And she became a lover of Poseidon. Athena which noticed immorality of Poseidon said “Separate with Poseidon!” to Medusa. But Medusa boasted of her beauty in Athena and fooled Athena.. Then angry Athena changed Medusa into the figure of the monster who has the hair of the poisonous snake, and eyes shining like a jewel with horrifying face with, and has the golden wings on the back, and has the hands of the bronze. Her older sisters who thought of Medusa miserably protested Athena. Athena which cannot contain her anger changed Euryale and Stheno where she protested into the figure of the monster same as Medusa. Euryale and Stheno became the indomitable body. Therefore, they who roughened character more and more attacked a certain town. Then they noticed that they and people whom eyes matched turned into a stone. They who snatched money and valuable articles in the town attacked many towns and villages, and they changed the person who resisted them in sequence to the stone. And the rumor that the monster who changed the person to the stone attacked a town spread out immediately. The son named Perseus with Zeus and the human being to hear the rumor has begun to look for their whereabouts. Then he was equipped with the helmet named Helm of Hades which a figure does not look like when put it on, and The shield named Aigis of the bronze mirror which rids the disaster, and Immortal Slaying Scythe named Harpe, and the golden sandals named Talaria which the wing which could fly in the sky grew, and the bag named Kibisis of Barrier Inversion given from gods. And Perseus which finds a place to stay of the three Gorgon sisters covered his figure with Helm of Hades and he ran the sky in Talaria and appeared in the hideout of the three Gorgon sisters. The poisonous snake of the hair of Medusa and Stheno and Euryale noticed a sign of Perseus and attacked Perseus. The poisonous snake of the hair of Stheno and Euryale snatched Helm of Hades. Perseus cut down a poisonous snake of the hair of Medusa and Stheno and Euryale with Harpe. And Stheno and Euryale flapped and attacked Perseus, then Euryale reflected in the mirror of Aigis became a stone and Stheno reflected in the mirror of Aigis became a stone in succession. Then Perseus cut a neck of Medusa off and he put a neck of Medusa in Kibisis and took it to go. Perseus gave a neck of Medusa for Athena. Athena fitted a neck of Medusa in Aigis. The present after time of several thousand years. Euryale Stheno which became a stone and Aigis which a neck of Medusa was fitted in were displayed through the hand of various people at separate museums. One day when a red full moon dyed a night sky red weirdly, a body of Euryale and Stheno which became a stone cracked, and they achieved revival. Euryale and Stheno damaged the museum where each was displayed and went out of there, and they joined. Then they flew around various places and looked for Medusa. And they found Aigis which a neck of Medusa was fitted in displayed at a certain museum. They destroyed a showcase, and they took out Aigis which a neck of Medusa was fitted in and grieved. When they left the museum, they have begun to look for blood relationship of Perseus to retaliate. And they found that the boy named Garret who was a descendant of Perseus lived in the town named Buchet. Athena which knew that Gorgon revived gave Garret Harpe and commanded it to cut off their neck in Harpe at that time. Garret succeeded in cutting their neck off with Harpe, and dropping it after fought against Euryale and Stheno which appeared before him. And the body of Euryale and Stheno and Aigis which a neck of Medusa was fitted in became extinct by power of Zeus. The memory that he fought against the three Gorgon sisters was deleted by Athena and he returned to everyday life immediately.