Can anyone explain the plot so far?

I'll try.
Basically Seth was not always bad, but right now he is ruling over Egypt as a tyrant abusing his son and wife.
He wants to rape a goddess named isis and he became ruler by murdering her husband. But the husband was resurrected kind of and he has a son who is supposed to be the rightful ruler, but he doesn't have abilities yet so they do challenges to see who is worthy.

Correct me if I'm wrong