The main event was Perseus' quest to slay Medusa. He got help from the gods. Then he used the special items to reach and kill Medusa. After that, he used her head's power.
Perseus was set on the mission to kill Medusa. He had to overcome the danger of her petrifying gaze. He was equipped by Hermes and other gods. He journeyed to Medusa's lair. There, he carefully navigated around the already - turned - to - stone victims. He managed to behead Medusa using the shield's reflection to his advantage. Afterward, the birth of Pegasus and Chrysaor happened from Medusa's severed neck. Perseus then carried on his adventures, using Medusa's head as a means of defense and attack against his enemies.