"I will give you a better present than any here. The head of Medusa
Test and Supreme and ordeal
The event that causes him to be called to adventure is the marriage of his mother. The king of this land wants to marry her and the king knows that Perseus doesn't have anything to give. So Perseus does the first thing that comes to mind and tells the king that he will give him the head of Mudusa.
Reward and Journey Home
There are about four aids in this story starting with Perseus's father Zeus, Hermes,and Athena. Hermes helping him the most by guiding him telling him where to go giving him a sword, the winged sandals then Athena giving him the shield and Zeus him blessing.