What's the plot of arachne and athena?

Arachne was a talented weaver but boastful of her talent and refused to accept her gift is from Athene. So, in anger, Athene had a weaving competition with her. In the end, Arachne was turned into a spider by Athene.

Explanation:

Arache, a mortal, refused to accept that the goddess Athene had bestowed her with her gift of weaving. When Athene heard about her boastful character, she disguised herself into an old woman and approached Arachne in person. When she refused to credit Athene for her talent and instead said that her talent is and from herself only. Athene and Arachne then had a weaving competition to see who is better. Athene weaved about mortals and their disobedience and disrespect of the Gods, with the Gods sitting at Mt. Olympus while Arachne in turn weaved about the bad qualities of the Gods against the mortals, especially Zeus who seduced and trapped many mortals. In all fairness, the weaving of Arachne was far better than Athene which angered her. Also, the move to display the Gods in that manner also added to the anger of Athene. So, she cursed Arachne and turned her into a spider.

to save the day, harry must get past a scary three-headed guard dog.