After Perseus finished his quest of retreiving the head of Medusa, he returned to the nymphs as he promised and they danced and had the time of their lives.
Perseus soon noticed that the ground began to tremble amid their festivities. Atlas disliked seeing his daughters enjoying themselves so he began to wreck havoc. Perseus then froze atlas into a mountain using the head of medusa.
Here is your daughter, but not for long as I claim her as my wife!
On his trip back home, Perseus saw a young girl chained to a rock while a large crowd of people surrounded the shore. He then found out that the king and queen had to sacrifice their daughter due to the queens boastfulness .
Close your eyes mother!
Perseus stabbed the sea monster to death and released Andromeda from her chains.
After saving Andromeda, he claimed her as his wife in exchange for his actions. He told Cepheus he was a fool for sacrificing her and he would not take no for an answer.
Perseus returned to his mother and froze Polydectes and others with his "wedding gift". Perseus's mother also informed him that he had also turned his grandfather to stone. Later, Perseus held his own wedding where he gave away his cap and shield and threw the head of Medusa into the ocean making coral.